This is the ability of a substance, called a solute to dissolve in a solvent. The solvent can either be a liquid, a solid or a gas. The temperature increases solubility and increases the rate of solubility of a substance. Solubility varies between different su...
由于LAH 和硼烷的价格相对要贵,因此工业上大量生产时,一般都应用该方法,比较常用的体系为:NaBH4-BF3, NaBH4-ZnCl2. J. Org. Chem., Vol. 63, No. 12, 1998. To a THF (220 mL) solution of 2-(carboxymethyl)-4-nitrobenzoic acid, 7a (10.0 g, 44.4mmol), was added sodium borohydride (5.06 g,...
Kinetic analysis of nSMase3 in the presence of PS revealed for SM a Km of 18.71 μm and a Vmax of 1.67 pmol/μg/h (Fig. 4B). MgCl2 and MnCl2 at 5 mm stimulated nSMase3, whereas CaCl2, CuCl2, or ZnCl2 did not change nSMase3 activity (Fig. 5A). PS stimulated nSMase3, ...
由于LAH 和硼烷的价格相对要贵,因此工业上大量生产时,一般都应用该方法,比较常用的体系为:NaBH4-BF3, NaBH4-ZnCl2. J. Org. Chem., Vol. 63, No. 12, 1998. To a THF (220 mL) solution of 2-(carboxymethyl)-4-nitrobenzoic acid, 7a (10.0 g, 44.4mmol), was added sodium borohydride (5.06 g,...
硼氢化钠通常不能用来直接还原羧酸,但是Lewis 酸的存在可大大提高其还原能力,从而用于羧酸的还原。由于LAH 和硼烷的价格相对要贵,因此工业上大量生产时,一般都应用该方法,比较常用的体系为:NaBH4-BF3, NaBH4-ZnCl2. J. Org. Chem., Vol. 63, No. 12, 1998. ...