Method for the preparation of sulfones and compounds containing carbon chains having conjugated unsaturation and the compounds resulting from such method

US4604480A · kind A · utility

Assignee

• The Research Foundation of the State University of New York · US

Inventors

• Eric Block · Niskayuna, US
• Mohammad Aslam · Port Aransas, US

Key dates

• Filing date: Aug 15, 1983
• Grant date: Aug 5, 1986
• Expiry date: Aug 15, 2003

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2/868
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A method for the preparation of a first sulfone compound of the formula: ##STR1## wherein R.sub.a is ##STR2## where R.sub.b is Br and R.sub.c is H except that R.sub.b and R.sub.c together may be an electron pair when R.sub.6 is a radical of the formula: ##STR3## wherein X.sub.1 is independently chlorine, bromine or iodine and R.sub.1 and R.sub.2 are independently at each occurrence hydrogen or, substituted or unsubstituted, phenyl or alkyl where the substituents are halogen or alkoxy or additional --SO.sub.2 Br groups; provided that, each carbon atom of R.sub.1 or R.sub.2 which contains --SO.sub.2 Br also contains an X.sub.1 group and wherein R.sub.3 through R.sub.9 are independently --OZ,--C.sub.6 M.sub.5,--Z,--SiZ.sub.3 or --X.sub.2, where Z is hydrogen or substituted or unsubstituted phenyl, alkyl, alkenyl or alkynyl; X.sub.2 is chlorine, bromine, iodine or fluorine; M is independently at each occurrence Z or X.sub.2 ; R.sub.3 and R.sub.4 may together be an electron pair; two or more of R.sub.3, R.sub.4, R.sub.5 and R.sub.6 may be combined together and with one or more of C.sub.2, C.sub.3 or C.sub.4 to form a ring structure and R.sub.1 and R.sub.2 may be joined together with C.s…