{"title":"SOLUTION-PHASE-PEPTIDE SYNTHESIS WITHOUT PURIFICATION OF COLUMN CHROMATOGRAPHY AND RECRYSTALLIZATION BY PROTECTING AMINO ACID ESTERS WITH PHOSPHINYL CHLORIDE (Dedicated to Professor Isao Kuwajima on the occasion of his 77th birthday)","authors":"Guanghui An, Wei Zhou, Xiaokang Xu","doi":"10.3987/COM-14-S(K)99","DOIUrl":"https://doi.org/10.3987/COM-14-S(K)99","url":null,"abstract":"","PeriodicalId":12850,"journal":{"name":"Heterocycles : an international journal for reviews and communications in heterocyclic chemistry","volume":"16 1","pages":"1405-1418"},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91310980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"DESIGN AND SYNTHESIS OF CONFORMATIONALLY CONSTRAINED BICYCLO[2.2.2]OCTANE-BASED UNUSUAL α-AMINO ACID DERIVATIVES VIA THE DIELS–ALDER REACTION (Dedicated to Professor Isao Kuwajima on the occasion of his 77th birthday)","authors":"S. Kotha, M. Meshram","doi":"10.3987/COM-14-S(K)26","DOIUrl":"https://doi.org/10.3987/COM-14-S(K)26","url":null,"abstract":"","PeriodicalId":12850,"journal":{"name":"Heterocycles : an international journal for reviews and communications in heterocyclic chemistry","volume":"144 1","pages":"357-371"},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86475994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"REGIOSELECTIVE INTRODUCTION OF SUBSTITUENTS TO THE MESO-POSITION OF PYRROMETHENONE DERIVATIVE-APPLICATION TO THE SYNTHESIS OF STERICALLY FIXED PHYTOCHROME CHROMOPHORE ANCHORED TO THE C15 MESO-POSITION (Dedicated to Professor Isao Kuwajima on the occasion of his 77th birthday)","authors":"Yudai Tanaka, Ryoji Iwamoto, R. Sakata","doi":"10.3987/COM-14-S(K)97","DOIUrl":"https://doi.org/10.3987/COM-14-S(K)97","url":null,"abstract":"","PeriodicalId":12850,"journal":{"name":"Heterocycles : an international journal for reviews and communications in heterocyclic chemistry","volume":"39 1","pages":"883-892"},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87826981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A novel iron-catalyzed intramolecular ring-closing C–H amination reaction of o-phenylenediamines was developed, affording the corresponding 2,7-disubstituted 5,10-diaryl-5,10-dihydrophenazines in acceptable yields. The reaction proceeded via the in-situ generation of the magnesium amides of the starting secondary amines in the presence of a catalytic amount of an iron salt and a stoichiometric amount of 1,2-dibromoethane as the terminal oxidant. The substituted dihydrophenazine derivatives can potentially be used as hole-injection materials in organic electroluminescence (OEL) devices and also offer scaffolds for further synthetic elaborations of OEL materials. This paper is dedicated to Professor Dr. Isao Kuwajima on the occasion of his 77th birthday. HETEROCYCLES, Vol. 90, No. 2, 2015 893
{"title":"SYNTHESIS OF 2,7-DISUBSTITUTED 5,10-DIARYL-5,10-DIHYDROPHENAZINES VIA IRON-CATALYZED INTRAMOLECULAR RING-CLOSING C-H AMINATION (Dedicated to Professor Isao Kuwajima on the occasion of his 77th birthday)","authors":"Yuma Aoki, Ryuji Imayoshi, T. Hatakeyama","doi":"10.3987/COM-14-S(K)102","DOIUrl":"https://doi.org/10.3987/COM-14-S(K)102","url":null,"abstract":"A novel iron-catalyzed intramolecular ring-closing C–H amination reaction of o-phenylenediamines was developed, affording the corresponding 2,7-disubstituted 5,10-diaryl-5,10-dihydrophenazines in acceptable yields. The reaction proceeded via the in-situ generation of the magnesium amides of the starting secondary amines in the presence of a catalytic amount of an iron salt and a stoichiometric amount of 1,2-dibromoethane as the terminal oxidant. The substituted dihydrophenazine derivatives can potentially be used as hole-injection materials in organic electroluminescence (OEL) devices and also offer scaffolds for further synthetic elaborations of OEL materials. This paper is dedicated to Professor Dr. Isao Kuwajima on the occasion of his 77th birthday. HETEROCYCLES, Vol. 90, No. 2, 2015 893","PeriodicalId":12850,"journal":{"name":"Heterocycles : an international journal for reviews and communications in heterocyclic chemistry","volume":"31 1","pages":"893-900"},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72606126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"PALLADIUM(0)-MEDIATED C-S AND O-H BONDS CLEAVAGE REACTION IN 2-HYDROXYBENZYL PHENYL SULFIDE : FORMATIONS OF OXYPHOSPHORANE AND 1,2-OXAPALLADACYCLE (Dedicated to Professor Isao Kuwajima on the occasion of his 77th birthday)","authors":"N. Nakata, N. Furukawa, Hiroki Kobayashi","doi":"10.3987/COM-14-S(K)45","DOIUrl":"https://doi.org/10.3987/COM-14-S(K)45","url":null,"abstract":"","PeriodicalId":12850,"journal":{"name":"Heterocycles : an international journal for reviews and communications in heterocyclic chemistry","volume":"43 1","pages":"144-149"},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76327797","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"STEREOCHEMISTRY OF VINYLOGOUS RUBOTTOM OXIDATION OF PROLINE-FUSED CYCLOHEXADIENOL SILYL ETHER (Dedicated to Professor Isao Kuwajima on the occasion of his 77th birthday)","authors":"K. Okano, S. Okaya, Taichi Kurogi","doi":"10.3987/COM-14-S(K)62","DOIUrl":"https://doi.org/10.3987/COM-14-S(K)62","url":null,"abstract":"","PeriodicalId":12850,"journal":{"name":"Heterocycles : an international journal for reviews and communications in heterocyclic chemistry","volume":"38 1","pages":"1299-1308"},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87716063","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"SYNTHESIS OF MACROCYCLIC PENTA- AND TETRAOXAZOLES AS G-QUADRUPLEX LIGANDS (Dedicated to Professor Isao Kuwajima on the occasion of his 77th birthday)","authors":"Shadi Sedghi Masoud, Yamato Tsushima, Keisuke Iida","doi":"10.3987/COM-14-S(K)90","DOIUrl":"https://doi.org/10.3987/COM-14-S(K)90","url":null,"abstract":"","PeriodicalId":12850,"journal":{"name":"Heterocycles : an international journal for reviews and communications in heterocyclic chemistry","volume":"10 1","pages":"866-873"},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84157641","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"MACROBICYCLIC AND MACROTRICYCLIC DERIVATIVES OF N,N',N'',N'''-TETRASUBSTITUTED CYCLEN AND CYCLAM (Dedicated to Professor Isao Kuwajima on the occasion of his 77th birthday)","authors":"S. M. Kobelev, A. Averin, A. Buryak","doi":"10.3987/COM-14-S(K)71","DOIUrl":"https://doi.org/10.3987/COM-14-S(K)71","url":null,"abstract":"","PeriodicalId":12850,"journal":{"name":"Heterocycles : an international journal for reviews and communications in heterocyclic chemistry","volume":"15 1","pages":"989-1017"},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73319384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"SYNTHETIC STUDIES ON SAFRAMYCIN ANIBIOTICS : AN IMPROVED SYNTHESIS OF TRICYCLIC LACTAM INTERMEDIATE AND CONSTRUCTION OF THE CORE RING SYSTEM OF SAFRAMYCIN A (Dedicated to Professor Isao Kuwajima on the occasion of his 77th birthday)","authors":"S. Kimura, Shintaro Kawai, Masayuki Azuma","doi":"10.3987/COM-14-S(K)24","DOIUrl":"https://doi.org/10.3987/COM-14-S(K)24","url":null,"abstract":"","PeriodicalId":12850,"journal":{"name":"Heterocycles : an international journal for reviews and communications in heterocyclic chemistry","volume":"61 1","pages":"327-343"},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74406676","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"REACTION OF 2-CHLORO-1-ALKYL-1H-INDOLE-3-CARBALDEHYDES WITH BARBITURIC ACIDS AND 5-METHYL-2-PHENYL-2,4-DIHYDROPYRAZOL-3-ONE : FORMATION OF COMPOUND WITH EXTREMELY SHORT INTRAMOLECULAR HYDROGEN BOND IN EIGHT-MEMBERED PSEUDOCYCLE","authors":"K. F. Suzdalev, M. N. Babakova, V. Kartsev","doi":"10.3987/COM-14-13135","DOIUrl":"https://doi.org/10.3987/COM-14-13135","url":null,"abstract":"","PeriodicalId":12850,"journal":{"name":"Heterocycles : an international journal for reviews and communications in heterocyclic chemistry","volume":"591 1","pages":"64-75"},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77318687","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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