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Addition von Silylenen an Iminoborane
Author(s) -
Paetzold Peter,
Hahnfeld Detlef,
Englert Ulli,
Wojnowski Wieslaw,
Dreczewski Boguslaw,
Pawelec Zbigniew,
Walz Leonhard
Publication year - 1992
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19921250514
Subject(s) - chemistry , stereochemistry , ring (chemistry) , photodissociation , yield (engineering) , image (mathematics) , medicinal chemistry , photochemistry , physics , organic chemistry , thermodynamics , artificial intelligence , computer science
Addition of Silylenes to Iminoboranes [1] Photolytically generated silylenes SiMe 2 and SiMes 2 are treated with iminoboranes XBN t Bu [X = t Bu, Me 3 Si( t Bu)N, i Pr 2 N: 1a–c ]. The products from SiMe 2 and 1a are the four‐and six‐membered rings [–B( t Bu)=N( t Bu)–SiMe 2 –SiMe 2 –] ( 3a ) and [–B( t Bu)N( t Bu)B( t Bu)N( t Bu)–SiMe 2 –SiMe 2 –] ( 4a ), depending on the conditions of the photolysis. SiMe 2 reacts with 1b to give the six‐membered ring [–BX=N( t Bu)–SiMe 2 –BX=N( t Bu)–SiMe 2 –] ( 4b ). From SiMes 2 and 1a,c the three‐membered rings [–BX=N( t Bu)–SiMes 2 –] are formed ( 2a : space group Pbca ; 2c : space group P1): SiMes 2 reacts with 1b to yield the unexpected four‐membered BNSiN ring [B(Mes)N( t Bu)–Si(Mes)(SiMe 3 )–N( t Bu)] ( 5 : space group P1).