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Effect of the nature and position of substituents in the aromatic ring on catalytic rearrangement of 1,3-bis(2-chlorophenoxy) and 1,3-bis(4-chlorophenoxy)-2-methylenepropanes

Journal Article · · J. Org. Chem. USSR (Engl. Transl.); (United States)
OSTI ID:5887698

Unlike the thermal rearrangement, the catalytic rearrangement of 1,3-bis(2-chlorophenoxy)- and 1,3-bis(4-chlorophenoxy)-2-methylenepropanes takes place by an intermolecular mechanism with the participation of only one O-C bond and subsequent cyclization of the obtained ether phenols to coumarans; the rearrangement is faster in the case of the 2-chloro-substituted ether. The subsequent participation of the two O-C bonds in the isomerization is observed in the case of 1,3-bis(2,4-dichlorophenoxy)-2-methylenepropane on account of the retarded cyclization.

Research Organization:
Lensovet Leningrad Technological Institute (USSR)
OSTI ID:
5887698
Journal Information:
J. Org. Chem. USSR (Engl. Transl.); (United States), Journal Name: J. Org. Chem. USSR (Engl. Transl.); (United States) Vol. 24:5; ISSN JOCYA
Country of Publication:
United States
Language:
English