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- W2950616076 abstract "Fifteen different diamines (4–18) and potonic acids have been screened in the catalytic asymmetric direct aldol reaction of three different aldehydes in acetone. These initial studies demonstrated that the secondary–tertiary diamine series is effective with regard to reactivity. In contrast, the primary–tertiary diamines 13 and 14 were proved to be a superb structural module to avoid dehydration. Further investigation led us to a new procedure for the preparation of diamine catalysts for synthetic convenience. This involves diamine–diacid salt 22, which acted not only as a catalyst backbone but also as a TfOH source. Salt 22–diamine 4 catalyst thus prepared was found to exhibit higher reactivity and selectivity." @default.
- W2950616076 created "2019-06-27" @default.
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- W2950616076 creator A5028679667 @default.
- W2950616076 creator A5074307978 @default.
- W2950616076 date "2002-10-01" @default.
- W2950616076 modified "2023-10-12" @default.
- W2950616076 title "Diversity-based strategy for discovery of environmentally benign organocatalyst: diamine–protonic acid catalysts for asymmetric direct aldol reaction" @default.
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- W2950616076 doi "https://doi.org/10.1016/s0040-4020(02)00965-1" @default.
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