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Tetraalkylidene‐1,4‐diboracyclohexanes from 3,4‐Dilithio‐2,5‐dimethyl‐2,4‐hexadiene; the First “Hetero[6]radialene” with Chair Conformation
Author(s) -
Maercker Adalbert,
Brieden Walter,
Schmidt Thomas,
Lutz Heinz Dieter
Publication year - 1989
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.198904771
Subject(s) - chemistry , medicinal chemistry , stereochemistry
The tetrapropylidenediboracyclohexanes 2a, b are stable toward air and moisture . They were obtained from 1 and the corresponding dihaloborane at − 50°C in Et 2 O . According to the X‐ray structure analysis, 2a adopts the chair conformation, in contrast, for example, to 2c . Boracyclopropanes could not be detected as the initial products.