105173-00-0Relevant articles and documents
Photoinduced Cyclization of (o-Alkylbenzoyl)phosphonates to Benzocyclobutenols
Ishida, Naoki,Yano, Takaaki,Yuhki, Tatsuya,Murakami, Masahiro
supporting information, p. 1905 - 1908 (2017/08/10)
(o-Alkylbenzoyl)phosphonates readily cyclize to highly strained benzocyclobutenols simply upon irradiation with UV light. The remarkable efficiency is ascribed to the electron-accepting character of the phosphonate substituent, which facilitates thermal ring closing of the o-quinodimethane intermediate and suppresses reversion to the starting carbonyl compound.