Process for the preparation of benzophenone thioethers

Details Process for the preparation of benzophenone thioethers Process for the preparation of benzophenone thioethers

1980-05-28

1981-10-27

Trousof, Natalie

Organic compounds -- part of the class 532-570 series

Organic compounds

Sulfur containing

568 42, 560107, 560225, 560255, 560 52, 564329, 560 85, 560194, 260465D, 260465F, 260465E, 260465G, 546192, 544158, 26032684, 544384, C07C14800, C07C14932

Patent

active

042975131

ABSTRACT:
Benzophenone thioethers of the general formula I or Ia ##STR1## in which X is hydrogen, alkyl, alkoxy or --COO-alkyl and X.sub.1 is hydrogen, Cl, Br or --SR, R is an unbranched or branched alkyl radical having 1-20 C atoms, which is unsubstituted or substituted by --OH, --OR.sup.1, --O--C(O)--R.sup.2, --COOR.sup.3, --C(O)-phenyl. --CN, --SR.sup.1, --NH.sub.2, --NHR.sup.4, --NR.sup.4 R.sup.5 or phenyl, in which R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are monovalent hydrocarbon radicals, R.sub.a is an alkylene radical having 2-10 C atoms, which is unsubstituted or substituted by --OH. --OR.sup.1 or --O--C(O)--R.sup.2 and/or is interrupted by --O--, --NR.sup.4, --O--C(O)--R.sup.6 --C(O)--O--, --C(O)--O--R.sup.7 --O--C(O)-- or phenylene and R.sup.6 and R.sup.7 are divalent hydrocarbon radicals, can be prepared by reacting a mono- or di-halogenobenzophenone of the general formula II ##STR2## in which X.sub.2 is Cl or Br and X.sub.3 is H, Cl or Br, in a polar solvent with a mercapto compound of the formula RSH or R.sub.a (SH).sub.2 in the presence of a base in an amount equivalent to the amount of halogen to be reacted.

REFERENCES:
patent: 3397244 (1968-08-01), Louthan
patent: 3542880 (1970-11-01), Rohr et al.
patent: 3686313 (1972-08-01), O'Shea
patent: 3949002 (1976-04-01), Feasey et al.
Sendelar et al., Chem. Abst. vol. 83, #27,917e (1975).
Mameda et al., Chem. Abst., vol. 85, #159561k (1976).
Peach, The Chemistry of the Thiol Group, part 2, pp. 735-739 (1974).
Auwers et al., Chem. Ber. vol. 27, pp 1734-1741 (1894).
Schoenberg, Ann, #436, pp. 216-217 (1924).

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