Chiral Macrocycle-Catalyzed Highly Enantioselective Phenylacetylene Addition to Aliphatic and Vinyl Aldehydes
作者:Zi-Bo Li、Tian-Dong Liu、Lin Pu
DOI:10.1021/jo070091j
日期:2007.6.1
The 1,1‘-binaphthyl macrocycle (S)-2 is found to be an excellent catalyst for the alkyne addition to aldehydes. In the presence of (S)-2 (20 mol %) and Me2Zn (2 equiv) in THF at room temperature, the addition of phenylacetylene to linear or branched aliphatic aldehydes and vinylaldehydes gave various propargylic alcohols with 89−96% ee.
Highly Enantioselective Phenylacetylene Additions to Both Aliphatic and Aromatic Aldehydes
作者:Ge Gao、David Moore、Ru-Gang Xie、Lin Pu
DOI:10.1021/ol026921r
日期:2002.11.1
The readilyavailable and inexpensive BINOL in combination with Ti(O(i)Pr)(4) is found to catalyze the reaction of an alkynylzinc reagent with various types of aldehydes including aliphaticaldehydes, aromaticaldehydes, and other alpha,beta-unsaturated aldehydes to generate chiral propargyl alcohols with 91-99% ee at room temperature. No previous chiral catalysts have exhibited such a broad scope
Alkynylation of carbonyl compounds with terminal acetylenes promoted by ZnCl2 and Et3N: simple, mild and efficient preparation of propargylic alcohols
作者:Biao Jiang、Yu-Gui Si
DOI:10.1016/s0040-4039(02)01986-x
日期:2002.11
A mild and efficient addition of terminal acetylenes to carbonyl compounds in the presence of ZnCl2 and Et3N gives propargylic alcohols in good to high yields.
TTMPP-Catalyzed Addition of Alkynes Using Trimethylsilylacetylenes
作者:S. Matsukawa、I. Sekine
DOI:10.1080/00397910802585878
日期:2009.4.22
A highly basic phosphine, tris(2,4,6-trimethoxyphenyl)phosphine (TTMPP), catalyzes alkynylation using trimethylsilylalkyne to give the corresponding products in good to high yields.
NIWA, SEIJI;SOAI, KENSO, J. CHEM. SOC. PT 1. PERKIN TRANS.,(1990) N, C. 937-943