Abstract: A thiolsulfonate is reacted with an aminecarbodithioate salt to give an aminecarbotrithioate product. The products of this invention have biological activity, particularly in controlling microorganisms and other pests.

Abstract: Process for preparing an .alpha.-aminoalcohol of formula ##EQU1## wherein R represents hydrogen or alkyl of from 1 to 5 carbon atoms, which comprises contacting a compound of formula ##EQU2## wherein R has the same meaning as above, with an alcohol of formula R'-OH wherein R' represents benzyl or the group ##EQU3## in which R" and R"' are independently selected from hydrogen and alkyl of from 1 to 4 carbon atoms in an organic solvent, in the presence of a basic catalyst, at from about 140.degree. to about 170.degree.C., treating the obtained product of formula ##EQU4## wherein R and R' have the above meanings, with at least an equimolecular amount of a p-toluene-sulfonyl halide, at from about -5.degree. to about 20.degree.C. in the presence of a tertiary organic nitrogen-containing base and reacting in a closed system the resulting compound of formula ##EQU5## wherein R and R' are as above defined, with an excess of gaseous ammonia, in the presence of an inert organic solvent, at from about 95.degree.

Abstract: The present invention is concerned with new derivatives of 3-formylrifamycin SV. More particularly the invention relates to O-substituted oximes of 3-formylrifamycin SV of formula I. ##SPC1##wherein R is selected from the group consisting of alkyl of at least 2 carbon atoms, alkenyl, alkynyl, cycloalkyl, alkoxyalkyl, cycloalkoxyalkyl, hydroxyalkyl, carboxyalkyl, carboalkoxyalkyl, carbamylalkyl, cyanoalkyl, nitroalkyl, aryloxyalkyl, aralkoxyalkyl, heterocycloxyalkyl, aminoalkyl, mono- and di-lower alkylaminoalkyl, substituted benzyl, mono- or poly-aryl substituted C.sub.2 -C.sub.8 alkyl and lower alkyl substituted with mono- or polynuclear heterocyclic rings containing at least one 1 to 3 heteroatom selected from oxygen, nitrogen and sulfur, with the exclusion of morpholine; R.sub.1 is H or CH.sub.3 CO; and the derivatives of the same oximes hydrogenated in at least one of the positions 16, 17; 18, 19; and 28, 29. These compounds have antimicrobial activity.