排序方式: 共有26条查询结果,搜索用时 31 毫秒
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M. Meisel 《Phosphorus, sulfur, and silicon and the related elements》2013,188(1-4):137-140
Abstract Some new results, especially on the fluoride degradation of phosphorus sulfides and phosphorus oxide sulfide are reported. Possible reaction mechanisms are discussed. 相似文献
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Gerd Becker Winfried Becker Gudrun Uhl Werner Uhl Hans-Jürgen Wessely 《Phosphorus, sulfur, and silicon and the related elements》2013,188(1-3):7-10
Abstract Alkyl- or arylbis(trimethylsilyl)phosphines as well as tris(trimethylsilyl)phosphine and the corresponding arsines react with acyl chlorides to give [1-(trimethylsiloxy)alkylidene]phosphines 1 and -arsines 2; most of their 2,2-dimethylpropylidene derivatives are thermally stable at room temperature. With the same class of phosphines as starting compounds and carbon disulfide [bis(trimethylsilylsulfano)methylidene]phosphines 3 are formed, whereas [(dialkylamino)methylidene]-4 and [diarylmethylidene]phosphines 5 or the corresponding arsines 6 and 7 can be obtained from acyl amides or ketones.1 相似文献
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A novel and easy synthetic route to diethyl (5-substituted phenyl-1,3,4-thiadiazol-2-ylamino) (substituted phenyl) methylphosphonates has been achieved by the reaction of substituted benzylidene-5-(substituted phenyl)-1,3,4-thiadiazol-2-amines and diethyl phosphite under microwave irradiation. These 1,3,4-thiadiazole aminophosphonates were identified by infrared, 1H NMR, and elemental analyses. The target compounds were obtained in better yields (71–89%) and shorter time (10 min) than with conventional heating.
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A novel and ef?cient synthetic route to α‐aminophosphonates containing benzothiazole moiety via a cascade three‐component reaction from conveniently available starting materials has been developed. The target compounds 3a – 3g , 7 and 8a , 8b were evaluated for their anticancer activities against the cancer cell line HL‐60 in vitro by the MTT method. Compound 3g showed good cancer inhibitory activity against the tested cell line. Further study is necessary to find out the potential antitumor activities. 相似文献
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《Tetrahedron》2003,59(15):2617-2623
Simple and functionalized N-phosphorylalkyl imines and N-phosphorylalkyl-N′-phenyl-carbodiimides are obtained by aza-Wittig reaction of phosphazenes derived from aminophosphonates with carbonyl compounds and phenyl isocyanate. The reaction with dimethylformamide diethyl acetal (DMF-DEA) of these functionalized imines leads to the synthesis of 4-amino-3-phosphoryl-2-azadienes. N-Phosphorylmethyl imine derived from benzaldehyde can be used for the preparation of substituted pyrrole-phosphonates, while acid treatment of 4-dimethylamino-3-diethylphosphoryl-1-phenyl-2-azadiene gives diethyl 5-diethylphosphorylpyrazin-2-ylphosphonate. 相似文献
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Bogdan Boduszek Agnieszka Halama Rafal Latajka 《Phosphorus, sulfur, and silicon and the related elements》2013,188(1):141-149
Abstract Alkyl monoesters of N-substituted aminophosphonic acids have been prepared by heating of the corresponding dialkyl aminophosphonates oxalate salts in water. The formed monoesters were separated as crystalline solids from the aqueous reaction mixture. 相似文献
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Ahmed I. Khodair Ahmed A. Swelim A. A. Abdel-wahab 《Phosphorus, sulfur, and silicon and the related elements》2013,188(1-3):173-175
Abstract Mass spectra of three sulfones selected to reveal certain structural features were obtained and interpreted. The mass spectra of the two isomeric sulfones, benzyl methyl sulfone and methyl p-tolyl sulfone, were quite different. The spectra showed that rearrangement of sulfones to the isomeric sulfinates occurs under the influence of the electron impact and that the migration of the aryl group is preferred over migration of the alkyl group. 相似文献
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