Potassium tert-butoxide → HCID 178420344, compound

HRID 870401Notes

Reaction equation

HRID 870401 reaction equation
[CH:1]1(/[CH:7]=[N:8]/[CH2:9][C:10]2[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=2)[CH2:6][CH2:5][CH:4]=[CH:3][CH2:2]1.CC(C)([O-])C.[K+]>>[CH:7](=[N:8]/[CH2:9][CH:10]1[CH2:15][CH2:14][CH:13]=[CH:12][CH2:11]1)\[C:1]1[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1

Participants

3

Reactant 2

HCID 23665647Potassium tert-butoxide2×HCID 178420343HCID 178420343, compound2×

Product 1

HCID 178420344HCID 178420344, compound

Procedure

In another aspect, a process is described for preparing a compound, or a salt of a compound, or a solvate thereof, of Formula (III). The process comprises steps of: (a) condensing benzylamine with cyclohex-3-enecarbaldehyde to form (E)-N-(cyclohex-3-en-1-ylmethylene)-1-phenylmethanamine; (b) contacting (E)-N-(cyclohex-3-en-1-ylmethylene)-1-phenylmethanamine with potassium tert-butoxide present in an amount ranging from about 0.05 molar equivalents to about 0.2 molar equivalents of potassium tert-butoxide to (E)-N-(cyclohex-3-en-1-ylmethylene)-1-phenylmethanamine to form (E)-N-benzylidene-1-(cyclohex-3-en-1-yl)methanamine; (c) contacting (E)-N-benzylidene-1-(cyclohex-3-en-1-yl)methanamine with paraformaldehyde present in an amount ranging from about 2.0 molar equivalents to about 5.0 molar equivalents of paraformaldehyde to (E)-N-benzylidene-1-(cyclohex-3-en-1-yl)methanamine, in presence of formic acid and a reaction medium comprising water present in an amount ranging from about 0.1% to about 6.5% of the reaction medium to form a compound of Formula (I); (d) contacting a compound of Formula (I) with a hydrogen bromide solution comprising about 43% to about 53% w/w of hydrogen bromide and where the inorganic salt of a compound of Formula (II) is an HBr salt; (e) contacting aminothiourea and benzoic acid in presence of polyphosphoric acid to form 2-amino-5-phenyl-1,3,4-thiadiazole H3PO4 salt; (f) contacting 2-amino-5-phenyl-1,3,4-thiadiazole H3PO4 salt, CuBr2 and iso-amyl nitrite, in presence of a acetonitrile, to form 2-bromo-5-phenyl-1,3,4-thiadiazole; and (g) contacting a compound of Formula (II) with 2-bromo-5-phenyl-1,3,4-thiadiazole, in presence of a sodium bis(trimethylsilyl)amide and tetrahydrofuran, to form a reaction mixture, and optionally contacting the reaction mixture with citric acid. In another aspect, the reaction mixture comprises

Sources & evidence

ORD record
ord-0d6f8f37846b455694826237696eebb5
Source dataset
uspto-grants-2015_03
Patent number
US08969562B2

Reaction notes

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