A short synthesis of tetraalkoxydiborane (4) reagents

NR Anastasi, KM Waltz, WL Weerakoon…

Index: Anastasi, Natia R.; Waltz, Karen M.; Weerakoon, Wimali L.; Hartwig, John F. Organometallics, 2003 , vol. 22, # 2 p. 365 - 369

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Citation Number: 30

Abstract

The synthesis of a series of bis(catecholato)diborane(4) compounds, B 2 (1,2-O 2 C 6 H 4 ) 2 , B 2 (1,2-O 2 C 6 H 3 Me-4) 2 , B 2 (1,2-O 2 C 6 H 2 Me 2 -3,5) 2 , B 2 [1,2-O 2 C 6 H 3 Bu t -4)] 2 , and B 2 [1,2-O 2 C 6 H 2 Bu t 2 -3,5] 2 , is reported. The compounds have been synthesized by reaction of 1% sodium/mercury amalgam with the corresponding halocatecholboranes, which are cleanly formed from the reaction of BCl 3 or BBr 3 and catechol. Combining these two ...