Regioselective control of the thiocarbon
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B El Ali; J Tijani; A El-Ghanam; M Fettouhi
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Article
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2001
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Elsevier Science
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French
β 61 KB
Control of the regioselective thiocarbonylation of terminal acetylenes 1a-e with arylthiols 2a,b was successfully achieved by using Pd(OAc) 2 and 1,4-bis(diphenylphosphino)butane (dppb), or 1,3-bis(diphenylphosphino)propane (dppp), as catalysts. The formation of the thioesters 3 or 4 depends mainly