Certain 2-substituted-2,3-dihydro-5-benzofuranol esters of certain sulfonic acids

Claim 1

A compound of the formula ##STR6## wherein R 1 , R 2 and R 3 are the same or different and are selected from the group consisting of hydrogen and alkyl of 1 to 6 carbon atoms, R 4 represents a member selected from the group consisting of hydroxy, alkylthio of 1 to 4 carbon atoms, phenoxy, nitrophenoxy, halophenoxy, --OSO 2 R 14 , --OCOR 13 , and --O--O--R 15 wherein R 13 is selected from the group consisting of alkyl of 1 - 4 carbon atoms, alkenyl of 2 - 4 carbon atoms, alkynyl of 2 - 4 carbon atoms, phenyl, chlorophenyl, tolyl, alkylamino of 1 - 4 carbon atoms, dialkylamino of 2 - 8 carbon atoms, alkoxy of 1 - 6 carbon atoms, phenoxy, phenylamino, chlorophenylamino, haloalkoxy of 1- 6 carbon atoms, methoxyethoxy, chlorophenoxy, alkenyloxy of 2 - 4 carbon atoms, chloroallyloxy, alkynyloxy of 2 - 4 carbon atoms and chlorobutynyloxy, R 14 is selected from the group consisting of alkyl of 1 - 4 carbon atoms, haloalkyl of 1 - 4 carbon atoms, phenyl, chlorophenyl, nitrophenyl, and tolyl, and R 15 is selected from the group consisting of alkyl of 1 - 4 carbon atoms, alkenyl of 2 - 4 carbon atoms and alkynyl of 2 - 4 carbon atoms, R 9 is selected from the group consisting of alkyl of 1 - 4 carbon atoms, chloromethyl, methoxypropyl, bromoethyl, phenyl, chlorophenyl and tolyl; and R 10 , R 11 and R 12 are the same or different and are selected from the group consisting of hydrogen, alkyl of 1 - 4 carbon atoms, halogen, cyano, acetyl and alkoxy of 1 - 4 carbon atoms.