Asymmetric, anti-Selective Scandium-Catalyzed Sakurai Additions to Glyoxyamide. Applications to the Syntheses of N-Boc d-Alloisoleucine and d-Isoleucine
摘要:
An enantio- and diastereoselective Sakurai-Hosomi reaction, catalyzed by chiral scandium pyridyl-bis(oxazoline) (pybox) complexes, has been developed. Both alkyl- and aryl-substituted allylsilanes are effective coupling partners with N-phenylglyoxamide. Applications of this reaction to the asymmetric syntheses of N-BOC D-alloisoleucine and D-isoleucine are described.
Asymmetric, anti-Selective Scandium-Catalyzed Sakurai Additions to Glyoxyamide. Applications to the Syntheses of N-Boc d-Alloisoleucine and d-Isoleucine
摘要:
An enantio- and diastereoselective Sakurai-Hosomi reaction, catalyzed by chiral scandium pyridyl-bis(oxazoline) (pybox) complexes, has been developed. Both alkyl- and aryl-substituted allylsilanes are effective coupling partners with N-phenylglyoxamide. Applications of this reaction to the asymmetric syntheses of N-BOC D-alloisoleucine and D-isoleucine are described.
Chiral sulfoxides as activators of allyl trichlorosilanes in the stereoselective allylation of aldehydes
作者:Vincenzo De Sio、Antonio Massa、Arrigo Scettri
DOI:10.1039/c002988b
日期:——
Chiral aryl methyl sulfoxides proved to be efficient activators in the asymmetric allylation of aldehydes with allyl trichlorosilanes. High enantioselectivity was found in the case of electron-poor aldehydes. The high levels of diastereoselectivity and the detection of nonlinear effects have allowed the elucidation of some mechanistic aspects of the reaction.
BERGLUND M.; ANDERSSON C.; LARSSON R., J. ORGANOMET. CHEM., 314,(1986) N 1-2, 61-73
作者:BERGLUND M.、 ANDERSSON C.、 LARSSON R.
DOI:——
日期:——
Asymmetric, <i>anti</i>-Selective Scandium-Catalyzed Sakurai Additions to Glyoxyamide. Applications to the Syntheses of <i>N</i>-Boc <scp>d</scp>-Alloisoleucine and <scp>d</scp>-Isoleucine
作者:David A. Evans、Yimon Aye、Jimmy Wu
DOI:10.1021/ol0604771
日期:2006.5.1
An enantio- and diastereoselective Sakurai-Hosomi reaction, catalyzed by chiral scandium pyridyl-bis(oxazoline) (pybox) complexes, has been developed. Both alkyl- and aryl-substituted allylsilanes are effective coupling partners with N-phenylglyoxamide. Applications of this reaction to the asymmetric syntheses of N-BOC D-alloisoleucine and D-isoleucine are described.