68331-57-7

Upstream product

• 103-30-0 (E)-1,2-diphenyl-ethene 
• 645-49-8 cis-stilben 
• 1484-50-0 desyl bromide 
• 1439-07-2 (R,R)-trans-stilbene epoxide 
• 1439-07-2 trans-Stilbene oxide 

Downstream Products

• 19456-17-8 (4R,5R)-4,5-diphenyl-1,3-dioxolan-2-one 
• 1439-07-2 trans-Stilbene oxide 
• 13921-79-4 trans-(1-bromo-2-methoxyethane-1,2-diyl)dibenzene 
• 59982-09-1 erythro-1,2-diphenyl-1-bromo-2-fluoroethane 
• 59974-31-1 C₁₄H₁₂BrF 
• 13921-79-4 erythro-1-bromo-2-methoxy-1,2-diphenylethane 
• 133522-22-2 (1R,2S)-2-azido-1,2-diphenylethan-1-ol 
• 23190-16-1 (1R,2S)-2-Amino-1,2-diphenylethanol 

Relevant academic research and scientific papers

Selective conversion of epoxides to vic-halo alcohols and symmetrical or unsymmetrical dihalides by triphenylphosphine/2,3-dichloro-5,6-dicyano-1,4- benzoquinone (DDQ) in the presence of quaternary ammonium halides

A new method is described for the efficient and selective conversion of epoxides to vic-halo alcohols or symmetrical and unsymmetrical dihalides using PPh3/DDQ/R4NX (X = Cl, Br, I) as a mixed-reagent system.

Single route to chiral syn- and anti-2-amino-1,2-diphenylethanols via a new stereodivergent opening of trans-1,2-diphenyloxirane

Oxiranyl ring opening of trans-stilbene oxide gave rise to anti- or syn-2-bromo-1,2-diphenylethanols, using either MgBr2·Et2O or MgBr2·Et2O, NaBr, and KBr with Amberlyst 15, respectively. Starting from optically pure (R,R)-trans-stilbene oxide, (1R,2R)- and (1R,2S)-2-amino-1,2-diphenylethanols were obtained in high yield and ee.

Semisynthetic enzymes in asymmetric synthesis: Enantioselective reduction of racemic hydroperoxides catalyzed by seleno-subtilisin

The serine protease subtilisin was chemically converted into the peroxidase-active seleno-subtilisin. This semisynthetic enzyme catalyzes the enantioselective reduction of racemic hydroperoxides in the presence of thiophenols to yield optically active hydroperoxides and alcohols on the semipreparative scale. The kinetic parameters and enantioselectivities of seleno-subtilisin-catalyzed reduction of various chiral hydroperoxides were determined. The catalytic efficiency of this semisynthetic enzyme is comparable to that of the native horseradish peroxidase. The sense in the enantioselectivity of the seleno-subtilisin is opposite to the natural enzymes previously used in the synthesis of optically active hydroperoxides. Consequently, the semisynthetic enzyme selenosubtilisin complements the naturally available peroxidases for the asymmetric synthesis of both enantiomers.

Preassociation, free-ion, and ion-pair pathways in the electrophilic bromination of substituted cis- and trans-stilbenes in protic solvents

Rates and products of electrophilic bromination of ring-substituted cis- and trans-stilbenes have been investigated in acetic acid, trifluoroethanol, ethanol, methanol, and water-methanol mixtures. The mY(Br) relationships (linear for nucleophilic solvent

Kinetics and Mechanism of Oxidation of Formic Acid and Oxalic Acid by N-Bromoacetamide in Perchloric Acid Medium

The title reactions are first order each in N-bromoacetamide (NBA) and the substrates.The rate decreases linearly with an increase in and this is attributed to the formation of kinetically inactive hypobromous acidium ion, (H2OBr(+)).The reaction is retarded by added acetamide.Hypobromous acid has been postulated as the active oxidising species.Kinetic isotope effect is not present.In the mechanism proposed the rate-determining step involves formation of formyl or oxalyl hypobromite which then decomposes in a fast step to give the products, mostly CO2.