Diastereoselective synthesis of (E)-1-trimethylsilyl-3-en-1-ynes by palladium-catalyzed cross-coupling reaction between trimethylsilylethynylzinc chloride and stereoisomeric mixtures of 1-bromo-1-alkenes
Efficient methods for the preparation of acetylenic ketones
作者:H.D. Verkruijsse、Y.A. Heus-Kloos、L. Brandsma
DOI:10.1016/0022-328x(88)80002-0
日期:1988.1
A number of acetylenicketones RCCC(O)R′ have been obtained in good yields from lithiated acetylenes RCCLi and acetic anhydride, N,N-dimethylacetamide, or N,N-dimethylbenzamide. The most convenient and general method consists of treating alkynylzinc chlorides with acid halides R′C(O)Cl. Benzoyl chloride (R′ = Ph), acryloyl chloride (R′ = CH2CH), and butynoyl chloride (R′ = C2H5CC) react only
从锂化乙炔RC CLi和乙酸酐,N,N-二甲基乙酰胺或N,N-二甲基苯甲酰胺以良好的产率获得了许多炔酮RC = CC(= O)R′ 。最方便,最通用的方法是用酰基卤R'C(= O)Cl处理炔基氯化锌。苯甲酰氯(R'= Ph),丙烯酰氯(R'= CH 2 = CH )和丁酰氯(R'= C 2 H 5 C = C )仅在催化量的Pd [P(P( Ph)3 ] 4。
Schulze,K. et al., Journal fur praktische Chemie (Leipzig 1954), 1969, vol. 311, p. 153 - 158
作者:Schulze,K. et al.
DOI:——
日期:——
Montijn,P.P.; Brandsma,L., Recueil des Travaux Chimiques des Pays-Bas, 1964, vol. 83, p. 456 - 463