At 110掳C, the highest oligomer yield is achieved by an initial H-Beta (33 wt %), while samples subjected to citric acid treatment (H-Beta-1), steam heating (H-Beta-2), and combined treatment (H-Beta-3) are less active in oligomerization, isomers being yielded as the main product....
Reaction of four esters of 伪- L-arabinofuranosyl bromide with 1,5-diazabicyclo-[5.4.0]undec-5-ene causes elimination of hydrogen bromide. In the case of the tris-( p-nitrobenzoate), only degradation products were observed, but from the other three esters, 1,4-anhydro- L- erythro-pent-...
The first are the benzyne isomers. Due to the high reactivity resulting ... B Zhang 被引量: 0发表: 2016年 Theoretical study of nitro–nitrite rearrangement of CH3NO2 Calculations designed to characterize the transition state and determine the barrier height for rearrangement of nitromethane to ...
1,1,1-Trifluoro-2-(trifluoromethyl)-4-penten-2-ol1,1,1-TRIFLUORO-2-TRIFLUOROMETHYL-PENT-4-ENE-2-OL1,1-Bis(trifluoromethyl)-3-buten-1-ol2-ALLYLHEXAFLUOROISOPROPANOL4,4-Bis(perfluoromethyl)-4-hydroxy-1-butene4-Penten-2-ol, 1,1,1-trifluoro-2-(trifluoromethyl)-ALLYLHEXAFLUOROISO-PROPANOL...
The stereochemistry of the autoxidation of hex-1-ene, cis- and trans-hex-2-ene, cis- and trans-hex-3-ene, and of the three geometrical isomers of hepta-2,5-diene, has been determined by the reduction of the hydroperoxides produced and an... EN Frankel,RF Garwood,JR Vinson,... -...
InChI=1S/C16H22ClN3O/c17-15-3-5-16(6-4-15)20-11-9-19(10-12-20)8-2-14-21-13-1-7-18/h3-6H,1-2,8-14H2 1.7 InChkey KPPJHLGFBMNLDB-UHFFFAOYSA-N 1.8 Canonical Smiles ClC1=CC=C(C=C1)N1CCN(CCCOCCC#N)CC1 1.9 Isomers Smiles ClC1=CC=C(C=C1)N1CCN(CCCOCCC#N)CC12...
英文名 Pent-2-ene (mixed isomers) 类型 脂肪族化合物 CAS号 109-68-2 物理性质 M 70.1, b 36.4℃, d420 0.650, nD20 1.38003, nD20 1.3839. 提纯方法 Reflux the mixture with sodium wire, then fractionally distil it twice through a Fenske (glass helices packing, p 11) column. [...
(tritylthio)pent-2-ene-1-ol of formula (XI),d) oxidizing the product obtained in step-c) using manganese dioxide (MnO2) in a organic solvent to provide (E)-5-(tritylthio)pent-2-enal, ande) optionally purifying the compound obtained in step-d) to provide pure (E)-5-(tritylthio)...
The ion/molecule reactions of gaseous pent-1-ene and pent-2-ene up to a pressure of 3 torr have been investigated in a high-pressure photoionisation mass spectrometer. With increasing pressure the reaction sequence is complicated by the presence of many condensed ionic species, which can be ...
Mammino, C. L. Murulana, M. H. Mwangi and T. W. Mabusela, "Antioxidant radical scavenging of phenolic pent-4-ene-1-yne derivatives isolated from Hypoxis Rooperi. A DFT study in vacuo and in solution," International Journal of Food Properties, vol. 18, pp.149-164, 2015....