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Ring Closing Metathesis Using Chiral Template Consisting of Hard and Soft Parts
Author(s) -
Siddiki Hakim S. M. A.,
Sugimura Takashi
Publication year - 2010
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200900039
Subject(s) - ring closing metathesis , yield (engineering) , metathesis , ring (chemistry) , phthalate , materials science , chemistry , stereochemistry , organic chemistry , polymer , composite material , polymerization
Abstract Summary: Macrocyclic compounds having 18‐, 19‐, 22‐, and 23‐membered rings were prepared quantitatively by ring closing metathesis of diene substrates consisting of a rigid o ‐ or m ‐phthalate group and flexible but geometrically regulated 2,4‐pentanediol tethers. From the p ‐phthalate analogues, the ring closing metathesis and the cyclic dimmer formation were observed to give 24‐membered ring (70% yield) and 40‐membered ring (65% yield) respectively.