vinyl dichlorides and electron deficient amides as the starting material is described. In the absence of transition-metal catalyst, the reaction proceeds under mild reaction conditions in open air and thus rendering a convenient operation. This strategy is not only suitable for both terminal and internal ynamide synthesis but also amenable for large-scale preparation. Broad substrate scopes with respect
A convenient and straightforward strategy for the synthesis of 2,3-disubstituted and 2,3,5-trisubstituted furans via a base-promoted domino reaction of β-keto compounds with vinyl dichlorides is described. This transition-metal-free approach proceeds under operationally simple reaction conditions featuring easily available starting materials, a broad substrate scope, and good functional group tolerance
Cross-coupling reactivity of 1,1-dichloroalkenes under palladium catalysis: domino synthesis of diarylalkynes
作者:L. N. Rao Maddali、Suresh Meka
DOI:10.1039/c7nj05107g
日期:——
An efficientsynthesis of diarylalkynes was achieved from the domino cross-coupling reaction of 1,1-dichloroalkenes with triarylbismuth reagents under palladium-catalyzed conditions. Under the established palladium protocol, 1,1-dichloroalkenes demonstrated hitherto unknown remarkable cross-coupling reactivity with organometallic triarylbismuth reagents to furnish functionalized diarylalkynes.
作者:Alexey V Shastin、Vasily N Korotchenko、Valentine G Nenajdenko、Elisabeth S Balenkova
DOI:10.1016/s0040-4020(00)00606-2
日期:2000.8
We found that N-unsubstituted hydrazones of aromatic aldehydes can be easily converted to the corresponding 1,1-dichlorostyrenes in the reaction with carbontetrachloride using copper (I) chloride as catalyst. Factors affecting the route of the reaction and yields of the products were investigated. A proposed mechanism for the reaction is discussed.
Pd0-Catalyzed carbonylation of 1,1-dichloro-1-alkenes, a new selective access to Z-α-chloroacrylates
作者:Martin Arthuis、Anne Lecup、Emmanuel Roulland
DOI:10.1039/c0cc02517h
日期:——
A novel and fully chemo- and stereoselective three component strategy leading to Z-α-chloroacrylates by a Pd0-catalyzed reaction of CO (1 atm) with 1,1-dichloro-1-alkenes and various alcohols is disclosed. This catalytic approach compares favourably with the Wittig type strategies as α-chloroacrylates of pure Z configuration are obtained in high yield.
本研究揭示了一种新型、完全化学和立体选择性的三组分策略,通过 Pd0 催化 CO (1 atm) 与 1,1-dichloro-1-alkenes 和各种醇的反应生成 Z-δ-氯丙烯酸酯。这种催化方法与 Wittig 类型的策略相比更有优势,因为它能以高产率获得纯 Z 构型的 α 氯丙烯酸酯。