propylhydrazine

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 4-(1-Benzyl-1H-imidazol-2-ylmethyl)-3,5-diethyl-1-propyl-1H-pyrazole was prepared from 4-(1-benzyl-1H-imidazol-2-ylmethyl)-heptane-3,5-dione and propylhydrazine in analogy to Example 190 b): light yellow viscous oil; MS (EI): 336.2 ((M+.), 100%), 245.3 ((M-PhCH2)+.).

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 4-(1-Benzyl-1H-imidazol-2-ylmethyl)-3,5-diethyl-1-propyl-1H-pyrazole was prepared from 4-(1-benzyl-1H-imidazol-2-ylmethyl)-heptane-3,5-dione and propylhydrazine in analogy to Example 190 b): light yellow viscous oil; MS (EI): 336.2 ((M+.), 100%), 245.3 ((M-PhCH2)+.).

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: In the manner given in Examples 1-7, above, 1ethyl-6-phenyl-4H-s-triazolo[ 4,3-a][1,4]benzodiazepine (III) in diethylene glycol is treated with propyl hydrazine to obtain both A and B 4-[α-amino-α-amino-α-phenyl-o-tolyl]-5-ethyl -4H-1,2,4-triazole-3-carboxaldehyde, propylhydrazone, which is separated by column chromatography into the two diastereomers A and B.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: In the manner given in Examples 1-7, above, 1ethyl-6-phenyl-4H-s-triazolo[ 4,3-a][1,4]benzodiazepine (III) in diethylene glycol is treated with propyl hydrazine to obtain both A and B 4-[α-amino-α-amino-α-phenyl-o-tolyl]-5-ethyl -4H-1,2,4-triazole-3-carboxaldehyde, propylhydrazone, which is separated by column chromatography into the two diastereomers A and B.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Following the procedure of Example 3, Step A, except that the o-dipropylbenzene of Example 3 is replaced by an equivalent amount of: 4-chloro-; 4-iodo-; and 4-bromo-1,2-dipropylbenzene and the methylhydrazine is replaced by an equivalent amount of propylhydrazine; cyclopropylhydrazine; and γ-THP-oxy-propylhydrazine, there is obtained 5-chloro, 5-iodo, and 5-bromo-2-propyl-1,3-diethylisoindole; 5-chloro-; 5-iodo-; and 5-bromo-2-cyclopropyl-1,3-diethylisoindole; and 5-chloro-; 5-iodo-; and 5-bromo-2-γ-THP-oxy-propyl-1,3-diethylisoindole, respectively; wherein THP represents tetrahydropyranyloxy.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of propylhydrazine (0.3 mole) in methylene chloride (150 ml) is charged into a glass reaction vessel equipped with a mechanical stirrer, thermometer and reflux condenser. 5-Methoxy-1,3,4-thiadiazol-2-yl isocyanate dimer (0.1 mole) is then added, with stirring, at room temperature. After the addition is completed the reaction mixture is heated at reflux for a period of about 4 hours. After this time the reaction mixture is stripped of solvent and excess hydrazine to yield the desired product 2-propyl-4-(5-methoxy-1,3,4-thiadiazol-2-yl)semicarbazide as the residue. equipped with a mechanical stirrer thermometer and reflux condenser After the addition is heated at reflux for a period of about 4 hours

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 4-(1-Benzyl-1H-imidazol-2-ylmethyl)-3,5-diethyl-1-propyl-1H-pyrazole was prepared from 4-(1-benzyl-1H-imidazol-2-ylmethyl)-heptane-3,5-dione and propylhydrazine in analogy to Example 190 b): light yellow viscous oil; MS (EI): 336.2 ((M+.), 100%), 245.3 ((M-PhCH2)+.).

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Prepared analogously to Example 1 starting from propylhydrazine and 2-(dimethylaminomethylene)-cyclohexane- 1,3-dione.

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Prepared analogously to Example 1 starting from propylhydrazine and 2-(dimethylaminomethylene)-cyclohexane- 1,3-dione.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 4-(3-Benzyl-3H-imidazol-4-ylmethyl)-3,5-diethyl-1-propyl-1H-pyrazole was prepared from 4-(3-benzyl-3H-imidazol-4-ylmethyl)-heptane-3,5-dione and propylhydrazine in analogy to Example 55 b): off-white solid; MS (ISP): 337.1 ((M+H)+.).