A new strategy for the transformation of terminalalkynes to branched allylic sulfones was developed. Using a Rh(I)/DPEphos/benzoic acid catalyst system, terminalalkynes react with sulfonyl hydrazides to produce branched allylic sulfones with good to excellent yields and selectivities in general.
Facile Synthesis of Vinyl Sulfones from β-Bromo Alcohols
作者:Jae Wook Lee、Chi-Wan Lee、Jin Hang Jung、Dong Young Oh
DOI:10.1080/00397910008087440
日期:2000.8
Vinyl sulfones are synthesized in good yields by dehydration of beta-hydroxy sulfones derived from beta-bromo alcohols.
HSIAO, C. -N.;SHECHTER, H., TETRAHEDRON LETT., 1982, 23, N 34, 3455-3458
作者:HSIAO, C. -N.、SHECHTER, H.
DOI:——
日期:——
HSIAO, C. -H.;SHECHTER, H., J. ORG. CHEM., 53,(1988) N 12, 2688-2699
作者:HSIAO, C. -H.、SHECHTER, H.
DOI:——
日期:——
A New c<i>ine</i>-Substitution of Alkenyl Sulfones with Aryltitanium Reagents Catalyzed by Rhodium: Mechanistic Studies and Catalytic Asymmetric Synthesis of Allylarenes
作者:Kazuhiro Yoshida、Tamio Hayashi
DOI:10.1021/ja0295568
日期:2003.3.1
The reaction of alkenyl sulfones with aryltitanium triisopropoxide (ArTi(OPr-i )3) in the presence of 3 mol % of [Rh(OH)((S)-binap)]2 in THF at 40 degrees C gave high yield of cine-substitution products. The catalytic cycle was established by deuterium-labeling studies, and it was applied to catalytic asymmetric synthesis of allylarenes which proceeds with over 99% enantioselectivity.