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Facile Synthesis of Sequence‐Defined Oligo(Dimethylsiloxane‐ co ‐Diphenylsiloxane)s
Author(s) -
Kawatsu Takahiro,
Choi JunChul,
Sato Kazuhiko,
Matsumoto Kazuhiro
Publication year - 2021
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.202000593
Subject(s) - hydrosilylation , catalysis , condensation , sequence (biology) , condensation reaction , chemistry , polymer chemistry , stereochemistry , organic chemistry , physics , biochemistry , thermodynamics
1,1,3,3,5,5,7,7‐Octamethyltetrasiloxane ( H MD 2 M H ), which is reported to release Me 2 SiH 2 via a B(C 6 F 5 ) 3 ‐catalyzed redistribution, acts as a good Me 2 SiH 2 precursor in the B(C 6 F 5 ) 3 ‐catalyzed dehydrocarbonative condensation of alkoxysilanes. A series of oligo(dimethylsiloxane‐ co ‐diphenylsiloxane)s that are uniformly sized and sequence‐defined at the atomic level are synthesized by a one‐pot controlled iteration of a B(C 6 F 5 ) 3 ‐catalyzed dehydrocarbonative condensation of alkoxysilanes with H MD 2 M H or Ph 2 SiH 2 and a B(C 6 F 5 ) 3 ‐catalyzed hydrosilylation of carbonyl compounds, followed by the subsequent B(C 6 F 5 ) 3 ‐catalyzed dehydrogenative condensation of silanols.