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91.
92.
The platinum(II) ylids [X2Pt{CH(py)CH2CH3}(py)] (X = Cl, Br; PY = pyridine) react with carbon monoxide to give the platinum carbonyls [CO(X2)Pt{CH(py)CH2CH2CH3}] which lose CO on heating or in solution. The platinum(IV) ylids [Cl4Pt{CH(py)CH2CH3}(py)] and[Cl2I(CH3)Pt{CH(py)CH2CH3}(py)] also react with CO to give Pt(CO)-ylid compounds. 相似文献
93.
R.D. Brown F.R. Burden P.D. Godfrey I.R. Gillard 《Journal of Molecular Spectroscopy》1974,52(2):301-321
About 350 lines in the microwave spectrum of NF2 have been measured in various ranges of frequency between 13.0 and 65.2 GHz by using two types of Zeeman effect spectrometers. Complete assignment of all lines has been achieved and, via the general microwave computer program SPINRO, the rotational constants, centrifugal distortion constants, dipole moment, electronic spin-rotation coupling constants, the constants for the coupling of the several nuclear spins with the electron spin and the nitrogen quadrupole coupling constants have all been obtained.By drawing upon the observed vibrational frequencies the average geometry of NF2 has been evaluated. Force constants and Coriolis coupling constants have also been derived.The values of the spin coupling constants for N and for F indicate that NF2 is a π-radical with the spin density mainly located on nitrogen. The multiplet patterns indicate that the ground electronic state wavefunction is antisymmetric to rotation about the molecular symmetry axis and so, for a π-radical, identifies the ground state as 2B1 as has previously been assumed for this molecule. 相似文献
94.
Roland Gillard 《Mathematische Annalen》1979,243(2):181-189
Sans résumé 相似文献
95.
96.
T. Ross Kelly Lakshminarayanan Ananthasubramanian Kripinath Borah John W. Gillard Richard N. Goerner Patrick F. King Judith M. Lyding Wen-Ghih Tsang Jacob Vaya 《Tetrahedron》1984,40(22):4569-4577
The development of a general strategy for the control ofregiochemistry in the Diels-Alder reactions of substituted naphthazarins is described. Application of this strategy to the synthesis of(±)-daunomycinone (2) employs two successive regiochemically controlled Diels-Alder reactions and leads to a ten-step, regiospecific synthesis of(±)-2 in 36% overall yield (Scheme 4). 相似文献
97.
98.
Alain-Claude Gillard Sylvain Rault Michel Boulouard Max Robba 《Journal of heterocyclic chemistry》1995,32(6):1741-1745
Reactivity of 1,2,3,10,11,11a-hexahydro-5H-thiazolo[4,3-c][1,4]benzodiazepin-5-one-11-thione and 1,2,3,10,11,11a-hexahydro-5H-thiazolo[4,3-c][1,4]benzodiazepine-5,11-dithione was evaluated against various amines. The synthetic pathways involved in these reactions which led to new thiazolo[4,3-c]-[1,4]benzodiazepine amidines are described. 相似文献
99.
100.
We report the practical synthesis of the new 5-azidopyrrolo[2,1-c][1,2,4]triazolo[4,3-a][1,4]benzo-diazepin-8-one and 11-alkylamino-2-azidopyrrolo[2,1-c][1,4]benzodiazepines via the corresponding hydroxy compounds. 相似文献