Metal(II) complexes of the carbonylnitronate ligands O2NCHC(O)R− (R=Ph, OMe or OEt) and X-ray structure of (DMANH)[Ni(O2NCHC(O)Ph)3] (DMAN=1,8-bis(dimethylamino)naphthalene)

Additions to Metal-Activated Organonitriles

“…The reactions of β -dicarbonyls, β -ketoamides, β -ketophosphonates, or phosphonoacetates, exhibiting strong C−H acidity, with nitriles which are based on the use of metal(II) centers as homogeneous catalysts have already been reviewed, in 1993, and later updated by additional experimental works − from the same authors, and therefore, this topic will not be treated herein. The metal-mediated reaction between β -dicarbonyls and nitriles have also been extended to acyl cyanides, and it was observed that [Ni(acac) 2 ] (4 mol %) or [Cu(acac) 2 ] , (5 mol %) catalyze the addition of β -diketones to RCOCN to give, e.g., the enamino diketones 267 depicted in Scheme .…”

A study of mono-, di- and tri-tosylated amines: An unexpected sulfonamide

“…Tritosylate 19 displayed an intramolecular hydrogen bond between the two nitrogen atoms similar to that seen in the protonation of proton sponge. [15][16][17] Compound 24 has three different camphoryl groups in it (see Supplemental Material).…”

“…1,8-Diaminonaphthalene 18 (500 mg, 3.2 mmol) in DCM (50 ml) was mixed with tosyl chloride (2.42 g, 12.8 mmol) and Et 3 N (1.28 g, 12.8 mmol) for 48 h. 21–23 The organic layer was extracted with dilute aqueous 2 M HCl (100 ml), then dried with MgSO 4 and filtered. The desired product was purified by chromatography on silica gel.…”