Phosphirenium-borate zwitterion: formation in the 1,1-carboboration reaction of phosphinylalkynes.
نویسندگان
چکیده
Reaction of the acetylene Mes(2)P-C≡C-Ar with B(C(6)F(5))(3) at rt gives a zwitterionic phosphirenium product, which reacts further at >100 °C to complete the 1,1-carboboration reaction.
منابع مشابه
Facile 1,1-Carboboration Reaction of a Diarylphosphino-substituted Conjugated Diyne with Tris(pentafluorophenyl)borane
Dedicated to Professor Heinrich Nöth on the occasion of his 85th birthday Bis(dimesitylphosphanyl)butadiyne (14) reacts with B(C6F5)3 by a 1,1-carboboration sequence. The selective attack at a single phosphanyl-alkyne moiety is observed. First a phosphirenium-borate zwitterion 15 is formed at r. t. Thermolysis (80 ◦C) results in the E-selective formation of the 1,1carboboration product, the fru...
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ورودعنوان ژورنال:
- Chemical communications
دوره 47 37 شماره
صفحات -
تاریخ انتشار 2011