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

A compound of the formula ##STR6## wherein R.sup.1, R.sup.2 and R.sup.3 are the same or different and are selected from the group consisting of hydrogen and alkyl of 1 to 6 carbon atoms,

• R.sup.4 represents a member selected from the group consisting of hydroxy, alkylthio of 1 to 4 carbon atoms, phenoxy, nitrophenoxy, halophenoxy, --OSO.sub.2 R.sup.14, --OCOR.sup.13, and --O--O--R.sup.15 wherein R.sup.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.sup.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.sup.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.sup.9 is selected from the group consisting of alkyl of 1 - 4 carbon atoms, chloromethyl, methoxypropyl, bromoethyl, phenyl, chlorophenyl and tolyl;
• and R.sup.10, R.sup.11 and R.sup.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.