On November 3, 2000, Sato, S.; Watanabe, H.; Asami, M. published an article.Formula: C9H9NO2 The title of the article was Catalytic asymmetric borane reduction of prochiral ketones by the use of diazaborolidine catalysts prepared from chiral β-diamines. And the article contained the following:
The catalytic asym. borane reduction of prochiral ketones was examined in the presence of chiral diazaborolidine catalysts prepared in situ from chiral β-diamines and borane. Chiral secondary alcs. were obtained with modest to high enantiomeric excesses (up to 92% ee) using (S)-2-[[4-(trifluoromethyl)anilino]methyl]indoline. The experimental process involved the reaction of H-Idc-OH(cas: 79815-20-6).Formula: C9H9NO2
The Article related to asym reduction ketone diazaborolidine, General Organic Chemistry: Synthetic Methods and other aspects.Formula: C9H9NO2
Referemce:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles