Functionalized Alkenylzinc Reagents Bearing Carbonyl Groups: Preparation by Direct Metal Insertion and Reaction with Electrophiles
作者:Christoph Sämann、Matthias A. Schade、Shigeyuki Yamada、Paul Knochel
DOI:10.1002/anie.201302058
日期:2013.9.2
cyclic and acyclic alkenylzinc reagents bearing functional groups such as aldehyde, keto, and ester groups were readily prepared by either direct zinc insertion in the presence of LiCl or by magnesiuminsertion in the presence of LiCl and ZnCl2. Subsequent functionalization reactions, such as Negishi cross‐couplings, acylations, and allylations, furnished polyfunctional compounds in excellent yields
95. Dipole moment and molecular structure. Part XVI. Configuration of ethylenic compounds
作者:Ernst Bergmann
DOI:10.1039/jr9360000402
日期:——
Sudborough; Thompson, Journal of the Chemical Society, 1903, vol. 83, p. 1155
作者:Sudborough、Thompson
DOI:——
日期:——
DOYLE M. P.; DEVIA A. H.; BASSETT K. E.; TERPSTRA J. W.; MAHAPATRO S. N., J. ORG. CHEM., 52,(1987) N 8, 1619-1621
作者:DOYLE M. P.、 DEVIA A. H.、 BASSETT K. E.、 TERPSTRA J. W.、 MAHAPATRO S. N.
DOI:——
日期:——
Stereoselective Hydrohalogenation of Alkynoic Acids and Their Esters in Ionic Liquids
作者:José Salazar、Francys Fernández、Jelem Restrepo、Simón E. López
DOI:10.3184/030823407x200038
日期:2007.3
A novel procedure is described for the hydrohalogenation of alkynoic acids and their esters using N-alkylpyridinium ionic liquids. Hydrohalogenating agents were prepared by mixing N-alkylpyridinium halides with an equimolar amount of trifluoroacetic acid. The corresponding halogenated alkenes were obtained in good yields with high diastereoselectivity.