Diphenylnitrile imine

Dimcthyl-3//-l,5-benzodiazepine forms the dicycloadduct 31 with diphenylnitrile imine.303... 

Nuclear Overhauser effect (NOE) difference measurements were used to assign structure 79 for the product of reaction of diphenylnitrile imine with 5-ethylsulfonyl-2-methyl(27/)pyridazinone. Thus in the H NMR spectrum the ot/, o-protons of the arylhydrazino moiety (which were identified by two-dimensional heteronuclear multiple quantum correlation (2-D HMQC) spectroscopy) were shown in differential NOE (DNOE) experiment to be significantly enhanced on irradiation of pyridazine hydrogen H-7, proving their steric proximity <2000JST13>. 

Silyl-2-pyrazolines are obtained in moderate to excellent yields by the [2 + 3] cycloaddition of a vinylsilane with diphenylnitrile imine.120... 

On refluxing in benzene with excess pyridine, the monocycloadduct of diphenylnitrile imine and pyridine smoothly underwent a [l,5]-sigmatropic shift and subsequent electrocyclic ring opening to afford 1,2,4-triazole derivative (44) (Scheme 33) <95H(40)515>. 

Bougrin, K., Soufiaoui, M., Loupy, A., and Jacquault, P. 1995. Addition dipolaire 1,3-de la diphenylnitrile imine sur quelques dipolarophUes en milteu sec sous microonds. New Journal of Chemistry, 19 213. 

Cycloadditions The first example of a [3+2] cycloaddition reaction involving a A-sulflnylamine was reported by Huisgen and coworkers in 1962. The authors added A-sulflnylaniline to diphenylnitrile imine 27 and they isolated the [3+2] cycloadduct 28 in 87 % yield. 

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