Thermolytic decomposition of benzylic dialkoxy disulfides
作者:DiAndra M. Rudzinski、Mary P. McCourt、Ronny Priefer
DOI:10.1016/j.tetlet.2009.07.084
日期:2009.9
non 1:1 ratio of alcohol to aldehyde reaffirms Harpp’s-postulated cage mechanism. We have shown that the ratio is dependant upon the substituent present which can enhance the pi-stacking ability with the solvent, and thus favor diffusion out of the solvation cage yielding the non 1:1 ratio observed.
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.
作者:Sylvie L. Tardif、Andrzej Z. Rys、Charles B. Abrams、Imad A. Abu-Yousef、Pierre B.F. Lesté-Lasserre、Erwin K.V. Schultz、David N. Harpp
DOI:10.1016/s0040-4020(97)00555-3
日期:1997.8
The chemistry of the generation and trapping of diatomicsulfur (S2) and sulfur monoxide (SO) are reviewed with special emphasis on recent work, including initial efforts to detect and trap diatomic selenium (Se2).
Disclosed is a method of inhibiting the growth of microorganisms in, at, or on a locus subject to microbial attack, comprising introducing to said locus an antimicrobially effective amount of at least one alkoxy disulfide of formula:R1-CHR3-O-S-S-O-CHR4-R2 wherein:
R1, R2are independently selected from 5- or 6-membered aromatic rings, optionally substituted with up to 3 e· donating substituents of which 2 can optionally be combined to form another ring; and
R3, R4are independently selected from H, CH3, or CH2CH3.
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