Redox Chemistry of a Hydroxyphenyl-Substituted Borane Angewandte Chemie International Edition by Po-Yeng Feng, Yi-Hung Liu, Tien-Sung Lin, Shie-Ming Peng, Ching-Wen Chiu / 22h // keep unread // hide // preview Abstract Chemical reduction of a hydroxyphenyl-substituted borane triggers a sequential electron- and intramolecular hydrogen-atom-transfer process to afford a hydridoborate phenoxide dianion. On the other hand, hydrogen-atom abstraction of the borane leads to the isolation of a neutral borylated phenoxyl radical, which can be transformed to the corresponding benzoquinone borataalkene derivative by reduction with cobaltocene. A radical approach: Chemical reduction of a hydroxyphenyl-substituted borane triggers a sequential electron- and hydrogen-atom-transfer process to afford a hydridoborate phenoxide dianion. Hydrogen-atom abstraction of the borane allows isolat...