Synthesis of alkenyl selenides and tellurides using PEG-400

被引：43

作者：

Lenardao, Eder J. ^{[1
]}

Silva, Marcio S. ^{[1
]}

Sachini, Maraisa ^{[1
]}

Lara, Renata G. ^{[1
]}

Jacob, Raquel G. ^{[1
]}

Perin, Gelson ^{[1
]}

机构：

[1] Univ Fed Pelotas, Inst Quim & Geociencias, LASOL, POB 354, BR-96010900 Pelotas, RS, Brazil

来源：

ARKIVOC | 2009年

关键词：

PEG-400; hydrochalcogenation; alkenyl selenides; alkenyl tellurides; TERMINAL ALKYNES; IONIC LIQUIDS; BETA-PHENYLCHALCOGENO-ALPHA; BETA-UNSATURATED ESTERS; VINYL SULFIDES; EASY ACCESS; HYDROSELENATION; SOLVENT; ACETYLENES; MICROWAVE; ORGANOSELENIUM;

D O I：

10.3998/ark.5550190.0010.b19

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

PEG-400 and glycerin were successfully used as recyclable solvents for the synthesis of several alkenyl selenides and tellurides, in good yields and with high selectivity by the hydrochalcogenation of terminal alkynes. The nucleophilic species of selenium and tellurium were generated in situ from the reaction of the respective diphenyl dichalcogenide with NaBH4 at 60 degrees C. This easy, general and improved method furnishes the corresponding alkenyl chalcogenides preferentially with Z configuration. The PEG-400 can be reused up to 4 times without previous treatment with comparable yields and selectivity.

引用

页码：221 / 227

页数：7

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