Transition Metal-Catalyzed Hydro-, Sila-, and Stannastannation of Cyclopropenes: Stereo- and Regioselective Approach toward Multisubstituted Cyclopropyl Synthons
摘要:
The first highly efficient, stereo- and regioselective palladium-catalyzed hydro-, sila-, and stannastannation of cyclopropenes to give multisubstituted cyclopropylstannanes have been developed. It was shown that the addition across the double bond of cyclopropene is generally controlled by steric factors and proceeds from the least hindered face. The directing effect of alkoxymethyl substituents in the hydrostannation reaction of 3,3-disubstituted cyclopropenes was demonstrated. This methodology represents a powerful and atom-economic approach toward a wide variety of highly substituted cyclopropylstannanes, important building blocks unavailable by other methods.
Preparation of Mikanecic Ester and its precursor, 1,3-butadiene-2-carboxylic ester
作者:L. K. Sydnes、L. Skattebøl、Christopher B. Chapleo、David G. Leppard、Karen L. Svanholt、André S. Dreiding
DOI:10.1002/hlca.19750580721
日期:1975.11.5
Eine thermische (a) und eine reduktive (b) Methode zur Herstellung von Mikanez-Estern wird beschrieben. Bei der ersten gelang der Nachweis des monomeren Vorläufers, 1,3-Butadien-2-carboxylester.
[EN] COMPOUNDS, COMPOSITIONS AND METHODS<br/>[FR] COMPOSÉS, COMPOSITIONS ET PROCÉDÉS
申请人:DENALI THERAPEUTICS INC
公开号:WO2020210684A1
公开(公告)日:2020-10-15
The present disclosure relates generally to LRRK2 inhibitors, or a pharmaceutically acceptable salt, isotopically enriched analog, tautomer, stereoisomer, mixture of stereoisomers, prodrug, or pharmaceutical composition thereof, and methods of making and using thereof.
Latypova, M. M.; Katerinich, L. V.; Baranova, I. N., Journal of Organic Chemistry USSR (English Translation), 1982, vol. 18, p. 2253 - 2257
作者:Latypova, M. M.、Katerinich, L. V.、Baranova, I. N.、Plemenkov, V. V.、Bolesov, I. G.
DOI:——
日期:——
Catalytic Enantioselective Hydrostannation of Cyclopropenes
作者:Marina Rubina、Michael Rubin、Vladimir Gevorgyan
DOI:10.1021/ja0496928
日期:2004.3.1
The first examples of catalytic enantioselective hydrostannation of the C=C double bond of cyclopropenes has been demonstrated. This method allows for the efficient synthesis of 2,2-disubstituted cyclopropylstannanes with high degrees of diastereo- and enantioselectivity. The facial selectivity of this reaction is entirely controlled by steric factors. A variety of functional groups at C-3 of the cyclopropenes were tolerated.