Synthesis of annelated phospholes through intramolecular C-H activation by monovalent phosphorus
Date of Issue2015
School of Physical and Mathematical Sciences
Electrophilic terminal phosphinidene complexes [Ar-Ar-P-W(CO)5] (Ar-Ar: biaryl or an analogue thereof) undergo a spontaneous insertion of the phosphorus atom into the vicinal C-H bonds to give annelated phospholes. Twelve examples are described, including biphenyl, thienyl, pyrrolyl, and benzofuryl groups as biaryl moieties. The activation energy of the insertion reaction is quite low (about 2 kcal mol−1).
Angewandte chemie international edition
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