摘要:

AbstractThree 1,1‐dithioacids containing an additional functional group, 2‐pyrrolidone‐1‐carbodithioic acid, 2‐hydroxycyclopentene‐1‐carbodithioic acid, and 2‐pyrrolidone‐1,3‐bis(carbodithioic) acid, were reacted with the Group 15 heterocycles 2‐chloro‐1,3‐dithia‐2‐arsa‐ and stiba‐cyclopentanes (CIMS2C2H4; M = As, Sb). The dithiocomplexes obtained were characterized by spectroscopic methods and elemental analyses. The X‐ray structure determination of the 2‐pyrrolidonedithiocarbamate of 1,3‐dithia‐arsacyclopentane shows a monodentate behavior of the dithiocarbamate entity and the absence of participation o

ISSN:1042-7163    

DOI:10.1002/hc.520040402

出版商:VCH Publishers, Inc.    

年代:1993

数据来源: WILEY

摘要:

AbstractThe title compound2bwas obtained as a minor product in the reaction between a thioanisole and PCl3/AlCl3. The crystal and molecular structure has been determined by single crystal X‐ray techniques. The compound crystallizes in the space group P 21/c, with α = 9.004(2), b = 13.416(3), c = 11.662(3) Å, and β = 93.1 (1)°. The molecule adoptes a “butterfly” ar

ISSN:1042-7163    

DOI:10.1002/hc.520040403

出版商:VCH Publishers, Inc.    

年代:1993

数据来源: WILEY

摘要:

AbstractThe first examples of 1,7,1,4,7,8‐dialkyltriazaborabicyclo[3.3.0]octanes1–3[R = isopropyl (1), R = 1‐phenylbenzyl(2), R = 1‐methylbenzyl(3)] are reported. The bulky substituents prevent dimerization and make the syntheses feasible. The structures and conformations of the new compounds were studied by NMR spectroscopy. A chiral bicycle3(R,R) was also p

ISSN:1042-7163    

DOI:10.1002/hc.520040404

出版商:VCH Publishers, Inc.    

年代:1993

数据来源: WILEY

摘要:

AbstractPreparation of P‐amino‐3‐phosphabicyclo[3.1.0]‐hexane 3‐oxides either by addition of dichlorocarbene to the double bond of 1‐amino‐2,5‐dihydro‐1H‐phosphole 1‐oxides or by substitution of the P‐chloro derivative of the bicyclic system was accomplished. Two different diastereomers are obtained by the two approaches; their13C NMR spectra were interpreted on the basis of the P‐ethoxy isomers, whose structures were confirmed by X‐ray analysis. The P‐hydroxy adduct was also prepared, and it was found that intermolecular OH … O hydrogen bonding connects the molecules together in the solid phase. This effect eliminates the possibility of diastereoisomerism, as was also observed in the case of P‐hydroxy tetrahydrophosphinine oxides. Thermolysis of the P‐hydroxy adduct is a better way to synthesize 1‐hydroxy‐1,2‐dihydrophosphinine oxides tha

ISSN:1042-7163    

DOI:10.1002/hc.520040405

出版商:VCH Publishers, Inc.    

年代:1993

数据来源: WILEY

摘要:

AbstractSeven bis‐(1λ4,2‐diselenol‐1‐ylium) tetrachloroferrates have been prepared by reaction of 1,3‐diketones or 1,3‐ketoaldehydes with hydrogen selenide and iron(III) chloride in ethanol saturated with hydrogen chloride. They decompose gradually in air. The corresponding 1λ4,2‐diselenol‐1‐ylium perchlorates have been prepared by reaction of the tetrachloroferrates with perchloric acid in acetic acid and are stable. The tetrachloroferrates react with benzenediazonium tetrafluoroborate to give 6,6aλ4‐disele

ISSN:1042-7163    

DOI:10.1002/hc.520040406

出版商:VCH Publishers, Inc.    

年代:1993

数据来源: WILEY

摘要:

AbstractPreparative methods of synthesis of 1‐ and 3‐phosphino‐indolizines by interaction between 2‐substituted indolizines with phosphorus(III) halogenides in the presence of bases have been developed. It was found that originally this reaction results in the formation of 1‐phosphino‐indolizines which then undergo izomerization into 3‐phosphino isomers. One, two, or three indolizine substituents can be consecutively attached to the phosphorus atom. New methods of syntheses of 1,3‐diphosphino‐indolizines ha

ISSN:1042-7163    

DOI:10.1002/hc.520040407

出版商:VCH Publishers, Inc.    

年代:1993

数据来源: WILEY

摘要:

AbstractThe lithium diisopropylamide (LDA) induced regioselective 1,3‐rearrangement of 3‐ and 2‐ pyridyl phosphates into the corresponding 3‐hydroxy‐4‐pyridyl‐and 2‐hydroxy‐3‐pyridylphosphonates has been observed and investigated. The rearrangement is proposed as a useful method for a directed introduction of a phosphoryl group into a hydr

ISSN:1042-7163    

DOI:10.1002/hc.520040408

出版商:VCH Publishers, Inc.    

年代:1993

数据来源: WILEY

摘要:

AbstractThe molecular structure of 2,2,6,6‐tetramethylpiperidinophosphaalkyne was determined by the X‐ray structural method. The main geometrical parameters are as follows: PC 1.559(2), NC(sp) 1.316(2) Å, PCN 178.9(1)°, with an almost planar trigonal bond configuration for the N atom and the chair conformation of the piperidine ring. Structural evidence for the nitrogen lone pair conjugation with the π‐system of the triple bond was found to be different in phosphaalkynes PC‐NR2and nitriles NCNR2. Quantum‐chemical ab initio calculations (HF/631G*) showed that this is caused by a different character of polarization of th

ISSN:1042-7163    

DOI:10.1002/hc.520040409

出版商:VCH Publishers, Inc.    

年代:1993

数据来源: WILEY

ISSN:1042-7163    

DOI:10.1002/hc.520040410

出版商:VCH Publishers, Inc.    

年代:1993

数据来源: WILEY

摘要:

AbstractS‐Trialkylstannyl dialkyldithiophosphates3and tetrathiophosphates6were easily obtained in the reaction of tetraphosphorus decasulfide1with trialkylalkoxystannanes2or alkylthiostannanes5under mild conditions. Tetraphosphorus decasulfide1and hexaalkyl distannylsulfides4produce tris(trialkylstannyl) tetrathiophosphates

ISSN:1042-7163    

DOI:10.1002/hc.520040411

出版商:VCH Publishers, Inc.    

年代:1993

数据来源: WILEY