Reaction of 1-(1-nitroalkyl)-cycloalkenes epoxide with silica gel afforded the corresponding 2-(1-nitroalkylidene)-cycloalkanols which were further oxidized with chromic acid-sulfuric acid in 2-(1-nitroalkylidene)-cycloalkanones.
作者:Harinath Chakrapani、Michael J. Gorczynski、S. Bruce King
DOI:10.1021/ja066011v
日期:2006.12.1
Allylic nitrocompounds were synthesized and evaluated as organic sources of nitrite and nitric oxide. Unactivated allylic nitrocompounds do not spontaneously release nitrite and nucleophile promoted nitrite release is slow. However, 2-(nitromethyl)-cyclohex-1-ene-3-one spontaneously dissociates in buffer (pH = 7.4) to release nitrite with a kobs = 1.6 x 10(-5) s(-1). In the presence of L-cysteine
合成了烯丙基硝基化合物并作为亚硝酸盐和一氧化氮的有机来源进行了评估。未活化的烯丙基硝基化合物不会自发释放亚硝酸盐,并且亲核试剂促进的亚硝酸盐释放缓慢。然而,2-(硝基甲基)-环己-1-烯-3-酮在缓冲液(pH = 7.4)中自发解离,释放亚硝酸盐,kobs = 1.6 x 10(-5) s(-1)。在 L-半胱氨酸存在下,该化合物迅速产生亚硝酸盐并与血红蛋白发生类似于亚硝酸钠的反应。结构修饰以及亲核试剂的性质和数量可调节亚硝酸盐的释放速率。在 L-半胱氨酸和抗坏血酸存在下,该化合物形成一氧化氮。总之,这些结果揭示了一种从有机化合物中可调释放亚硝酸盐和一氧化氮的新结构体系。
Facile synthesis of allylic nitro compounds by N,N-dimethylethylenediamine-catalyzed condensation of aliphatic and alicyclic ketones with primary nitroalkanes
作者:Rui Tamura、Masahiro Sato、Daihei Oda
DOI:10.1021/jo00373a007
日期:1986.11
TAMURA RUI; SATO MASAHIRO; ODA DAIHEI, J. ORG. CHEM., 51,(1986) N 23, 4368-4375
作者:TAMURA RUI、 SATO MASAHIRO、 ODA DAIHEI
DOI:——
日期:——
126. The effect of the nitro-group in three-carbon tautomerism
Reaction of 1-(1-nitroalkyl)-cycloalkenes epoxide with silica gel afforded the corresponding 2-(1-nitroalkylidene)-cycloalkanols which were further oxidized with chromic acid-sulfuric acid in 2-(1-nitroalkylidene)-cycloalkanones.