Zinc hydride dithionite

One of the oldest-known reactions of N-nitrosamines is their reduction to 1,1-disubstituted hydrazines discovered by Fischer (19) The most common method to perform this transformation has been zinc dust in acid, generally acetic acid tetrazenes are sometimes formed as by-products (20) and denitrosation can also occur. Several other reducing methods have been investigated reduction with lithium aluminum hydride and catalytic hydrogenation are sometimes useful. Sodium dithionite reduction of benzyl substituted N-nitrosamines in base can result in fragmentation to... [Pg.3]

Sodium borohydride-Palladium chloride. Sodium borohydride-Rhodium(lII) chloride. Sodium borohydride-Tin(II) chloride. Sodium cyanoborohydride. Sodium 9-cyano-9-hydrido-9-borabicyclo[3.3.1]nonane. Sodium dithionite. Sodium hydride-Sodium t-amyl oxide-Zinc chloride. Sodium trimethoxyborohydride. Tetra-/i-butylammonium borohydride. Tetra-n-butylammonium cyanoborohydride. Tetra-n-butylammonium octahydrotriborate. Tri-n-butyltin hydride. Triethoxy silane. Triisobutylaluminum-Bis(N-methyl-salicyclaldimine)nickel. Zinc borohydride. REDUCTIVE CYCLIZATION Cobaloximc(I). [Pg.311]

Sodium 0,0-diethyl phosphorotelluroate, 485 Sodium dithionite, 485 486 Sodium-Ethanol, 472 Sodium-Hexamethylphosphoramide, 473 Sodium hydride-Sodium /-amyl oxide-Zinc chloride, 486... [Pg.338]

Potassium phosphinate, 4453 Sodium disulfite, 4802 Sodium dithionite, 4801 Sodium hydride, 4438 Sodium hypoborate, 0164 Sodium phosphinate, 4467 Sodium thiosulfate, 4798 Sulfur dioxide, 4831 Tetraphosphorus hexaoxide, 4861 Tin(II) chloride, 4064 Tin(II) fluoride, 4325 Titanium trichloride, 4152 Titanium(II) chloride, 4111 Tungsten dichloride, 4113 Vanadium dichloride, 4112 Vanadium trichloride, 4153 Zinc, 4921... [Pg.2568]

Phosphorus trichloride Potassium persulfate Silicon tetrachloride Sodium borohydride Sodium dithionite Sodium hydride Sodium hydrosulhte Sodium hypochlorite Sodium peroxide Sodium persulfate Thionyl chloride Urea peroxide Zinc... [Pg.251]