Development of a Method for the Synthesis of a-Substituted a,b-Unsaturated Lactones Based on Stille-Type Pd-catalyzed Carbonylation of (Z)-w-Iodoalkenols. An Efficient and Selective Synthesis of (+)-Hamabiwa-lactone B
Alk-2-en-4-yn-1-ols and furans from alkali-metal acetylides and epichlorohydrin
作者:S. R. Landor、E. S. Pepper
DOI:10.1039/j39660002283
日期:——
The preparation of trans-undec-2-en-4-yn-1-ol, trans-hept-2-ene-4,6-diyn-1-ol and trans-non-2-ene-4,6-diyn-1-ol from the reaction of alkali-metalacetylides and diacetylides with epichlorohydrin is described. 2-Furylallene and 1-(2-furyl)prop-1-yne, believed to originate from the cyclisation of cis-hept-2-ene-4,6-diyn-1-ol, were also isolated. trans-3-Chloroprop-2-en-1-ol is shown to be a by-product
Development of a Method for the Synthesis of a-Substituted a,b-Unsaturated Lactones Based on Stille-Type Pd-catalyzed Carbonylation of (Z)-w-Iodoalkenols. An Efficient and Selective Synthesis of (+)-Hamabiwa-lactone B
作者:Ei-ichi Negishi、Baiqiao Liao
DOI:10.3987/com-99-s138
日期:——
Highly chemoselective triple bond reductions on unsymmetrical 1,4-diorganyl-1,3-butadiynes
作者:Miguel J Dabdoub、Vânia B. Dabdoub
DOI:10.1016/0040-4020(95)00564-o
日期:1995.1
absolute retention of the double bond geometry In this way. sequential treatment with dimethyl sulfate of enynyl lithium 8 generated in situ by reaction of 2b with n-butyllithium produced the (Z)-enyne free of tellurium 9 The reaction of 8 with CO2 followed by acidification of the reaction mixture resulted in the formation of carboxylic acid 10 also with the central carbon-carbon double bond of Z configuration