At elevated temperatures chlorodithioformates 1 react with acyclic 1,3-dienes 2 with remarkable regioselectivity to yield 2 H -3,6-dihydrothiopyrans 3 . Spontaneous loss of HCl from 3 leads to the isolable but labile 2 H -thiopyrans 4 .
在高温下，二硫代甲酸氯酯1与无环1,3-二烯2反应，具有显著的区域选择性，生成2 H -3,6-二氢硫代吡喃3。HCl从3中自发损失导致可分离但不稳定的2h -硫代嘌呤4。
{"title":"Hetero-Diels-Alder reactions of chlorodithioformates with acyclic 1,3-dienes","authors":"I. El-Sayed, A. Senning","doi":"10.1080/02786110215842","DOIUrl":"https://doi.org/10.1080/02786110215842","url":null,"abstract":"At elevated temperatures chlorodithioformates 1 react with acyclic 1,3-dienes 2 with remarkable regioselectivity to yield 2 H -3,6-dihydrothiopyrans 3 . Spontaneous loss of HCl from 3 leads to the isolable but labile 2 H -thiopyrans 4 .","PeriodicalId":22122,"journal":{"name":"Sulfur Letters","volume":"66 1","pages":"263 - 267"},"PeriodicalIF":0.0,"publicationDate":"2002-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83698560","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}
The C=S double bond of 2,3,4,6-tetra- O -acetyl- g -D-glucopyranosyl isothiocyanate reacts with 1-aza-2-azoniaallene salts under [3+2] cycloaddition to afford (glucosylimino)-1,3,4-thiadiazoles.
2,3,4,6-四- O -乙酰-g - d - glucopyranoyl异硫氰酸酯的C=S双键在[3+2]环加成下与1-氮杂-2-氮杂二烯盐反应生成(葡萄糖基)-1,3,4-噻二唑。
{"title":"One-pot synthesis of N -nucleosides via 1,3-dipolar cycloaddition of 1-aza-2-azoniaallene salts to 2,3,4,6-tetra- O -acetyl-β-D-glucopyranosyl isothiocyanate","authors":"A. El-Gazzar, M. Hegab, N. A. Hassan","doi":"10.1080/02786110213978","DOIUrl":"https://doi.org/10.1080/02786110213978","url":null,"abstract":"The C=S double bond of 2,3,4,6-tetra- O -acetyl- g -D-glucopyranosyl isothiocyanate reacts with 1-aza-2-azoniaallene salts under [3+2] cycloaddition to afford (glucosylimino)-1,3,4-thiadiazoles.","PeriodicalId":22122,"journal":{"name":"Sulfur Letters","volume":"26 1","pages":"161 - 171"},"PeriodicalIF":0.0,"publicationDate":"2002-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89366937","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}
The crystal structure of (2 R *, S S *)- N -phenyl- N -(2- N '- tert -butyldiphenylsilyl- S -phenylsulfonimidoyl)-1-phenyl)-ethylamine (C 36 H 38 N 2 OSSi) is reported, thus confirming the relative stereochemistry of this molecule.
据报道，这一分子的相互关联刻板印象得到了证实。
{"title":"(2 R *, S S *)- N -Phenyl- N -(2-N′- Tert -Butyldiphenylsilyl- S -Phenylsulfonimidoyl-1-Phenyl)Ethylamine","authors":"B. Dikić, S. Pyne, B. Skelton, Allan H. White","doi":"10.1080/02786110211432","DOIUrl":"https://doi.org/10.1080/02786110211432","url":null,"abstract":"The crystal structure of (2 R *, S S *)- N -phenyl- N -(2- N '- tert -butyldiphenylsilyl- S -phenylsulfonimidoyl)-1-phenyl)-ethylamine (C 36 H 38 N 2 OSSi) is reported, thus confirming the relative stereochemistry of this molecule.","PeriodicalId":22122,"journal":{"name":"Sulfur Letters","volume":"38 1","pages":"63 - 66"},"PeriodicalIF":0.0,"publicationDate":"2002-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90686742","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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