1,3,4-Thiadiazolines by a 1,5-Dipolar Ring Reconstruction of Mesoionic (2,3-Diphenyltetrazolio)thio Ylides
作者:Shuki Araki、Tetsuya Goto、Yasuo Butsugan
DOI:10.1246/bcsj.61.2979
日期:1988.8
4-Phenyl-2-phenylazo-2,3-dihydro-1,3,4-thiadiazoles were synthesized from 2,3-diphenyltetrazolium-5-thiolate by two methods. The formation of the thiadiazolines is rationalized by 1,5-dipolar ring closure of the intermediate mesoionic (tetrazolio)thio ylides.
Reaction of dehydrodithizone with benzyne and diphenylcyclopropenethione. Isolation of N-(1,2-diphenyldiazonia)-1,3-benzothiazole-2-aminate and the formation of 2-phenylazo-4,6,7-triphenyl-4H-1,3,4-thiadiazepine-5-thione
作者:Kevin T. Potts、Arthur J. Elliott、George R. Titus、David Al-Hilal、Peter F. Lindley、Gerhard V. Boyd、Timothy Norris
DOI:10.1039/p19810002692
日期:——
Dehydrodithizone adds benzyne to yield the title compound (7); diphenylcyclopropenethione, on the other hand, gave the thiadiazepine (9). Several other cycloadducts of dehydrodithizone are also described.
脱氢双硫zone加入苯并生成标题化合物(7); m / z 254。另一方面,二苯基环丙烯硫酮可制得噻二氮杂(9)。还描述了脱氢二硫zone的其他几种环加合物。
Cycloaddition reactions of the mesoionic dehydrodithizone incorporating a new 1,3-dipolar species
作者:P. Rajagopalan、P. Penev
DOI:10.1039/c2971000490b
日期:——
The mesoionicdehydrodithizone (I) reacts readily, in 1,3-dipolar fashion, with activated alkenes and alkynes to furnish cycloadducts and with ethoxycarbonyl-methylenetriphenylphosphorane to yield the betaine (IX).
A synthetic strategy for switching the single ion anisotropy in tetrahedral Co(<scp>ii</scp>) complexes
作者:Shefali Vaidya、Apoorva Upadhyay、Saurabh Kumar Singh、Tulika Gupta、Subrata Tewary、Stuart K. Langley、James P. S. Walsh、Keith S. Murray、Gopalan Rajaraman、Maheswaran Shanmugam
DOI:10.1039/c4cc08305a
日期:——
We have shown for the first time, by simply exploiting the hard/soft nature of ligands, single ion magnetic anisotropy of Co(ii) tetrahedral complexes can be switched (+ve to −ve orvice versa) rationally.
Synthesis of 2,3-Diaryltetrazole-5-thiones and Theoretical Studies on Atomic Charge Distributions of 2,3-Diphenyltetrazole-5-thione
作者:Fangfang Jian、Pusu Zhao、Lan Zhang、Yuxia Hou
DOI:10.1021/jo0504767
日期:2005.10.1
Four 2,3-diaryltetrazole-5-thiones have been synthesized in high yields using a new synthetic method under mild reaction conditions. Theoretical calculations of the structure, vibrational frequencies, and natural population analysis (NPA) of atomic chargedistributions on 2,3-diphenyltetrazole-5-thione 1 have been performed by DFT-B3LYP, HF, and MP2 methods using several basis sets. According to the