c -单乙基磷酸烯烃的替代合成及其结构。

IF 1.1 4区化学 Q4 CHEMISTRY, INORGANIC & NUCLEAR Zeitschrift fur Anorganische und Allgemeine Chemie Pub Date : 2012-11-01 Epub Date: 2012-10-09 DOI:10.1002/zaac.201200324

Andreas Orthaber, Elisabet Öberg, Reuben T Jane, Sascha Ott

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引用次数: 15

摘要

描述了用标准Sonogashira偶联条件由C-溴代磷烯烃顺式-Mes*P=C(Me)(C≡CR)合成C-单乙基磷烯烃反式Mes*P=C(Me)(C≡CR) (Mes* = 2,4,6 - tbu3ph, R = Ph, SiMe3)。晶体学研究证实，在pd催化的交叉偶联过程中，P=C双键发生了顺-反异构化反应，只产生了反式乙炔磷酸烯烃。所有合成化合物的晶体学研究表明π共轭作用在乙炔和P=C π共轭体系上的扩展。

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Alternative Synthesis and Structures of C-monoacetylenic Phosphaalkenes.

An alternative synthesis of C-monoacetylenic phosphaalkenes trans-Mes*P=C(Me)(C≡CR) (Mes* = 2, 4, 6-^tBu₃Ph, R = Ph, SiMe₃) from C-bromophosphaalkenes cis-Mes*P=C(Me)Br using standard Sonogashira coupling conditions is described. Crystallographic studies confirm cis-trans isomerization of the P=C double bond during Pd-catalyzed cross coupling, leading exclusively to trans-acetylenic phosphaalkenes. Crystallographic studies of all synthesized compounds reveal the extend of π-conjugation over the acetylene and P=C π-systems.

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来源期刊

Zeitschrift fur Anorganische und Allgemeine Chemie 化学-无机化学与核化学

CiteScore

2.60

自引率

14.30%

发文量

308

审稿时长

1 months

期刊介绍： ZAAC is an international scientific journal which publishes original papers on new relevant research results from all areas of inorganic chemistry, solid state chemistry, and co-ordination chemistry. The contributions reflect the latest findings in these research areas and serve the development of new materials, such as super-hard materials, electrical superconductors, or intermetallic compounds. Up-to-date physical methods for the characterization of new chemical compounds and materials are also described.