Chemoenzymatic synthesis of trans-dihydrodiol derivatives of monosubstituted benzenes from the corresponding cis-dihydrodiol isomers
作者:Derek R. Boyd、Narain D. Sharma、Nuria M. Llamas、Gerard P. Coen、Peter K. M. McGeehin、Christopher C. R. Allen
DOI:10.1039/b616100f
日期:——
trans-dihydrodiols involves a regioselective hydrogenation and a Mitsunobu inversion of configuration at C-2, followed by benzylic bromination and dehydrobromination steps. The method has also been extended to the synthesis of both enantiomers of the trans-dihydrodiol derivatives of toluene, through substitution of a vinylbromine atom of the corresponding trans-dihydrodiol enantiomers derived from bromobenzene
Reactions of enantiopure cyclic diols with sulfuryl chloride
作者:Derek R. Boyd、Narain D. Sharma、Magdalena Kaik、Peter B. A. McIntyre、John F. Malone、Paul J. Stevenson
DOI:10.1039/c4ob00042k
日期:——
Monocyclic allylic cis-1,2-diols reacted with sulfuryl chloride at 0 °C in a regio- and stereo-selective manner to give 2-chloro-1-sulfochloridates, which were hydrolysed to yield the corresponding trans-1,2-chlorohydrins. At −78 °C, with very slow addition of sulfuryl chloride, cyclic sulfates were formed in good yields, proved to be very reactive with nucleophiles and rapidly decomposed on attempted
A Comparative Study of the Synthesis of 3-Substituted Catechols using an Enzymatic and a Chemoenzymatic Method
作者:V. Berberian、C. C. R. Allen、N. D. Sharma、D. R. Boyd、C. Hardacre
DOI:10.1002/adsc.200600437
日期:2007.3.5
A series of cis-dihydrodiol metabolites, available from the bacterialdioxygenase-catalysedoxidation of monosubstituted benzene substrates using Pseudomonas putida UV4 , have been converted to the corresponding catechols using both a heterogeneous catalyst (Pd/C) and a naphthalene cis-diol dehydrogenase enzyme present in whole cells of the recombinant strain Escherichia coli DH5α(pUC129: nar B). A
Synthesis and Reactions of Enantiopure Substituted Benzene cis-Hexahydro-1,2-diols
作者:D. R. Boyd、N. D. Sharma、M. V. Berberian、K. S. Dunne、C. Hardacre、M. Kaik、B. Kelly、J. F. Malone、S. T. McGregor、P. J. Stevenson
DOI:10.1002/adsc.200900818
日期:2010.3.22
Enantiopure cis‐dihydro‐1,2‐diol metabolites, obtained from toluene dioxygenase‐catalysed cis‐dihydroxylation of six monosubstituted benzene substrates, have been converted to their corresponding cis‐hexahydro‐1,2‐diol derivatives by catalytic hydrogenation via their cis‐tetrahydro‐1,2‐diol intermediates. Optimal reaction conditions for total catalytic hydrogenation of the cis‐dihydro‐1,2‐diols have been