Catalytic enantioselective Diels-Alder reactions using titanium complexes of cis-N-sulfonyl-2-amino-1-indanols
作者:E.J. Corey、Thomas D. Roper、Kazuaki Ishihara、Georgios Sarakinos
DOI:10.1016/s0040-4039(00)61343-6
日期:1993.1
A titaniumcomplex derived from (1R, 2S)-N-(2,4,6-trimethylbenzenesulfonyl)-2-amino-1-indanol catalyzes the Diels-Alder reaction of 2-bromoacrolein and cyclopentadiene with 96.5:3.5 enantioselectivity. A new and efficient synthesis of 2-amino-1-indanol (6) contributes to the potential of this methodology.
Asymmetric Diels−Alder Reactions Catalyzed by a Triflic Acid Activated Chiral Oxazaborolidine
作者:E. J. Corey、Takanori Shibata、Thomas W. Lee
DOI:10.1021/ja025848x
日期:2002.4.1
generation of chiral Lewis superacids by protonation of a non-Lewis acidic oxazaborolidine (1) with triflic acid. The resulting cationic species (3) are powerful and highly enantioselective catalysts for the Diels-Alder reaction of various 1,3-dienes with alpha,beta-enals. An optimization study (see Table 1) led to the selection of reaction conditions and catalysts (6A and 6B) which are very effective. The
First application of attractive intramolecular interactions to the design of chiral catalysts for highly enantioselective Diels-Alder reactions
作者:E. J. Corey、Teck Peng Loh
DOI:10.1021/ja00023a066
日期:1991.11
A Novel Chiral Super-Lewis Acidic Catalyst for Enantioselective Synthesis
作者:Yujiro Hayashi、Jeffrey J. Rohde、E. J. Corey
DOI:10.1021/ja960766s
日期:1996.1.1
Catalytic Enantioselective Diels−Alder Reaction via a Chiral Indium(III) Complex
作者:Yong-Chua Teo、Teck-Peng Loh
DOI:10.1021/ol050518d
日期:2005.6.1
A chiral indium complex has been developed to effect high enantioselectivities in catalyzing enantioselective Diels-Alder reaction. The cycloaddition of a variety of cyclic and open-chained dienes to 2-methacrolein and 2-bromoacrolein resulted in good yields and excellent enantioselectivities (up to 98% ee).