| abstract |
Procedure for the preparation of pyrazoline compounds of the formula ** (See formula) ** in which R is a lower alcohol group, R'is a hydrogen atom or an optionally substituted phenyl group and X is an optionally substituted low molecular weight aliphatic radical, characterized in that compounds of the formula are condensed ** (See formula) ** in which R and R'have the meanings mentioned above and Z represents a halogen atom or a dialkohilamino group, with hydrazines of the formula ** (See formula) ** in which X'represents a hydroxy group or has the aforementioned meaning for X, and eventually the radical X' is transformed into the radical X by transformation into the sulfinic acid derivative and by alcoholization. (Machine-translation by Google Translate, not legally binding) |