Zobrazeno 1 - 9
of 9
pro vyhledávání: ''
Autor:
Hiroshi Takeuchi, Keisuke Suga
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 2. :1803-1808
Reactions of di(phenyl and 4-tolyl) disulfides 1a and 1b with PhX 3a–e (X = H, Me, Et, Ph and Cl) in the presence of AlCl3 at 25 °C give diaryl sulfides 4–6 by aromatic arylthiolation via the disulfide radical cations 2, along with thiophenols 7
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 2. :2641-2646
The effect of solvent polarity on the keto–enol tautomerism of N- and O-acetylated acyclovir derivatives has been studied. Results of different spectroscopic methods (1H NMR, UV/VIS, IR, Raman) have been interpreted in combination with the results
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 2. :319
The stereochemistries of the reactions between cyanate and aspartic acid and 3-methylaspartic acid have been examined. The product of the first reaction, N-carbamoylaspartic acid 3. can cyclise to give either dihydroorotic acid 5 or 5-carboxymethylhy
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 2. :2163
Methylenecyclopropyl sulfones are not formed when the title chlorosulfones are treated with methanolic methoxide; instead 1-arylsulfonyl-2-methoxy-2-methylcyclopropanes are formed by an addition–cyclisation sequence involving intramolecular displac
Autor:
Christopher Dean, David Whittaker
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 2. :1541
The reactions of menthol with FSO3H–SO2 and neomenthyl chloride with SbF5–SO2ClF follow different routes. The first yields a substituted cyclopentyl cation and the second a substituted cyclohexyl cation. Experiments on substituted cyclohexyl chlo
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 2. :1804
O-Saticyloylglycolamides undergo cleavage in the pH range 7–13 to yield salicylamide and salicylate anion in the high and low ranges respectively. Scanning the u.v: spectrum during reaction gives evidence for the accumulation and decay of intermedi
Autor:
Robert C. Mitchell
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 2. :915
The i.r. spectra of N-methyl-N′-[4-(5-methylimidazol-4-yl)butyl]thiourea (methylburimamide), N-(4-imidazol-4-ylbutyl)-N′-methylthiourea (burimamide), N-methyl-N′-{2-[(5-methylimidazol-4-yl)methylthio]ethyl}thiourea (metamide), N-{2-[(imidazol-4
Autor:
Yvonne Chiang, A. Jerry Kresge
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 2. :1083
Rates of hydrolysis of the vinyl ether group of homoprostacyclin (2), which differs from prostacyclin only in that it has four instead of three carbon atoms in the chain joining this group to a carboxy function, were measured in H2O solution over the
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 2. :1607
The rearrangement of a mixture of Ph13CH2OPh and PhCH218OPh (with some unlabelled ether) catalysed by AlBr3 in homogeneous solution in 1,2,4-trichlorobenzene and in nitrobenzene has been examined. The literature report of this reaction was shown to b