Preparation of Homoallylic Homopropargylic Alcohols from 2-Vinyloxiranes
作者:Matthew L. Maddess、Mark Lautens
DOI:10.1021/ol051326l
日期:2005.8.1
beta, gamma-Unsaturated aldehydes generated in situ by treatment of 2-vinyloxiranes with a catalytic amount of Sc(OTf)3 or (BFOEt2)-O-. are effectively trapped by B-allenyl-9-BBN to afford homoallylic homopropargylic alcohols in high yield. An enantioselective version has been demonstrated, and a convenient synthesis of 9-allenyl-9-BBN is described.
Concise Total Synthesis of Cruentaren A
作者:Alois Fürstner、Martin Bindl、Ludovic Jean
DOI:10.1002/anie.200703839
日期:2007.12.10
Gonzalez, Ana Z.; Roman, Jose G.; Alicea, Eyleen, Journal of the American Chemical Society, 2009, vol. 131, p. 1269 - 1273
作者:Gonzalez, Ana Z.、Roman, Jose G.、Alicea, Eyleen、Canales, Eda、Soderquist, John A.
DOI:——
日期:——
Nonracemic Homopropargylic Alcohols via Asymmetric Allenylboration with the Robust and Versatile 10-TMS-9-borabicyclo[3.3.2]decanes
作者:Chunqiu Lai、John A. Soderquist
DOI:10.1021/ol0476164
日期:2005.3.1
The asymmetric allenylboration of representative aldehydes with the stable, storable 1 is reported. Easily and efficiently prepared in either enantiomeric form from the air-stable crystalline 4 through simple Grignard procedures, 1 gives 6 cleanly. The latter is easily isolated in high yield and ee with predictable stereochemistry. The procedure also regenerates 4 for its direct conversion back to