ALPHA -KETONE ACETYLENIC INHIBITED PLATINUM GROUP METAL CATALYZED ORGANOPOLYSILOXANE COMPOSITIONSCurable organopolysiloxane compositions useful, e.g., for the production of anti-stick coatings, comprise (1) an organopolysiloxane, (2) an organohydropolysiloxane, (3) a platinum group metal hardening ...
PURPOSE: To obtain an optically active α-hydroxyketone derivative useful as an intermediate for compounds effective for the inhibition of HIV protease, prevention and treatment of HIV infectious disease and treatment of acquired immunodeficiency syndrome by reacting an alkyl-substituted siloxyindene...
NEW MATERIAL:An alpha-substituted ketone derivative expressed by formula I (X is H or Cl; R<1> and R<2> are H or lower alkyl; R<3> is alkyl, alkenyl, aryl or aralkyl or R<2> and R<3> together represent 3 or 4C alkylene) or salts thereof. EXAMPLE:2-Oxopropyl 2-[4-(3-chl...
NH). Also reductive rearrangement of α,β-epoxy ketone3to allyl alcohol derivative5(aGrob–Eschenmosertype fragmentation) using NH2NH2, preferably water-free,4,6or using semicarbazide.4 Sign in to download full-size image Allyl acetate (5).5Hydrazine hydrate (0.23 mL, 3.6 mmol) was added to...
The present invention is to a method for the preparation of α - hydroxyketone directed. The present method operates enzymatically and allows the desired compounds in to obtain high enantiomer concentrations.The present invention also provides a correspondingly modified whole cell catalyst, and its use...
Ketone, 3aalpha,4,5,6,7,7a-hexahydro-7abeta-methyl-1beta-indanyl methy l化学性质 沸点: 250.7±8.0 °C(Predicted) 密度: 0.965±0.06 g/cm3(Predicted) 安全信息 Ketone, 3aalpha,4,5,6,7,7a-hexahydro-7abeta-methyl-1beta-indanyl methy l性质、用途与生产工艺 ...
(AIBN) or benzoyl peroxide (BPO) as initiator; oxidizing in the organic solvent; dehydrating through dehydrant; separating and purifying to obtain the alpha, beta-unsaturated ketone; improving reacting receiving rate; reducing manufacturing cost; possessing mild reacting condition; using little catalyst...
HYDROGENATION OF ALPHA-HYDROXYKETONE 优质文献 相似文献Enantioselective synthesis of β-hydroxy amines and aziridines using asymmetric transfer hydrogenation of α-amido ketone A rapid, expedient and enantioselective method for the synthesis of β-hydroxy amines and monosubstituted aziridines in up to 99%...
An alpha-chloroketone is defined as a compound obtained by the reaction of alpha-dichloroaryltelluroketones with chlorine in dichloromethane, resulting in the formation of corresponding alpha-chloroketones in good yields. AI generated definition based on: Tellurium in Organic Synthesis (Second Edition)...
Hydrogen transfer pathways of the asymmetric reduction of alpha,beta-unsaturated ketone mediated by baker's yeast (vol 34, pg 158, 2006) Baker's yeast fermenting on D-glucose converts 2-substituted C6-C3 alpha,beta-unsaturated aromatic aldehydes into the corresponding 3-phenylprop-2-en-1-ols....