Preparation of 4-Substituted Benzyl Sulfoxylates and Related Chemistry
作者:Sylvie L. Tardif、David N. Harpp
DOI:10.1021/jo991360b
日期:2000.8.1
sulfoxylates (7b, 4-NO(2); 7c, 4-Cl; 7d, 4-CH(3)O, 7e: 4-CH(3)) are reported. The unexpected stability of 7b has permitted the first X-ray determination at room temperature of a sulfoxylate. The thermalisomerization of sulfoxylates 7b-c to sulfinates 8b-c was studied in different solvents (toluene-d(8), CDCl(3), and CD(3)CN) and interpreted as a concerted unimolecular process following first-order kinetics
Generalized Synthesis and Physical Properties of Dialkoxy Disulfides
作者:Eli Zysman-Colman、David N. Harpp
DOI:10.1021/jo050574s
日期:2005.7.1
of the inherently large barrier to rotation and the resultant thermal decomposition pathway is discussed. Both phenomena are shown to be solvent independent; hinderedrotation is substrate independent. The decomposition of 1a is ca. 7 kcal/mol higher than the barrier to rotationabout the S−S bond. The combined evidence suggests acyclic unsymmetric homolytic cleavage of the dialkoxy disulfide.