摘要:

AbstractA new method has been developed for handling volatile and hygroscopic substances in bomb calorimetry. A platinum crucible, covered with a platinum lid and sealed with vaseline, is used. The lid is opened by a counterweight when the vaseline is ignited. The enthalpy of formation of liquid butanol‐1 was measured and compared with literature value

ISSN:0165-0513    

DOI:10.1002/recl.19690880302

出版商:WILEY‐VCH Verlag    

年代:1969

数据来源: WILEY

摘要:

AbstractUpon heating 7‐methylcycloheptatriene the 3‐, 1‐ and 2‐isomers are successively formed by 1‐5 shifts of hydrogen. The rate constants at 140° have been determined. Photochemical 1‐7 shifts of hydrogen are also reported: the 1‐isomer yields preferentially the 7‐isomer and little of the 2‐isomer, whilst the 2‐isomer yields mainly the 3‐isomer and little of th

ISSN:0165-0513    

DOI:10.1002/recl.19690880303

出版商:WILEY‐VCH Verlag    

年代:1969

数据来源: WILEY

摘要:

AbstractSolid state Raman‐spectroscopic results are communicated for: In2Cl3, In5Cl9, InCl2, InCl3, InCl3· PCl51, InCl3· NH4Cl, InCl3· N(C2H5)4Cl, InCl3· 3 NH4Cl and InCl3· 3 TlCl.The melt of InCl2has been studied too.Infrared absorption spectra, mostly in the range 240‐700 cm−1, have been determined for the majority of the compounds mentioned above.A detailed study of the binary system In ‐ InCl3in the range InCl1.75to InCl2.10h

ISSN:0165-0513    

DOI:10.1002/recl.19690880304

出版商:WILEY‐VCH Verlag    

年代:1969

数据来源: WILEY

ISSN:0165-0513    

DOI:10.1002/recl.19690880305

出版商:WILEY‐VCH Verlag    

年代:1969

数据来源: WILEY

摘要:

AbstractTri‐sec‐aminomethanes and dialkoxy‐sec‐aminomethanes can be obtained from chloroform sodium alkoxide and sec‐amines. The tri‐sec‐aminomethanes can be converted into tetra‐sec‐aminoethylenes by thermolysis. It appears that tri‐sec‐aminomethanes and tetra‐sec‐aminoethylenes have been mistaken one for the other more than once in the literature.Some interesting properties of the compounds

ISSN:0165-0513    

DOI:10.1002/recl.19690880306

出版商:WILEY‐VCH Verlag    

年代:1969

数据来源: WILEY

摘要:

AbstractAliphatic and alicyclic esters are found to be hydrolyzed conveniently and without epimerization in concentrated sulfuric acid at room temperature. First‐order kinetics are observed. AHammettrho value of ‐3.6 applies for the hydrolysis of methyl benzoates. Sterically hindered esters show increased rates of hydrolysis. These findings are in accordance with the AAc1 mechan

ISSN:0165-0513    

DOI:10.1002/recl.19690880307

出版商:WILEY‐VCH Verlag    

年代:1969

数据来源: WILEY

摘要:

AbstractIn methanol, 1‐acetylthio‐1‐alkynes are converted into 1,3‐oxathiolesIn aqueous solution a similar intermediate is formed with a rate independent of the acidity and with a negligible solvent deuterium isotope effect. This intermediate rearranges to the end‐product at a rate that decreases with th

ISSN:0165-0513    

DOI:10.1002/recl.19690880308

出版商:WILEY‐VCH Verlag    

年代:1969

数据来源: WILEY

摘要:

Abstract1,1‐Dimethyl‐7‐isopropyltetralin (II) is formed in up to 40% yield by a ZnCl2‐catalyzed rearrangement‐dehydrogenation of longifolene (I), or isolongifolene (III). The structural proof of II is based on spectroscopic and chemical evidence. Acetylation and formylation of II yielded products with a weak m

ISSN:0165-0513    

DOI:10.1002/recl.19690880309

出版商:WILEY‐VCH Verlag    

年代:1969

数据来源: WILEY

摘要:

AbstractBromodecarboxylation of the disodium salt of 3,4‐dimethylthiophene‐2,5‐dicarboxylate with bromine in water gave 2,5‐dibromo‐3,4‐dimethylthiophene. This bromodecarboxylation reaction, first mentioned byMellesandBacker(1953), has interesting synthetic aspects and a number of other example

ISSN:0165-0513    

DOI:10.1002/recl.19690880310

出版商:WILEY‐VCH Verlag    

年代:1969

数据来源: WILEY

摘要:

AbstractThis paper deals with the synthesis of some bicycloheterenes. 4,5,6,7‐Tetrahydro‐1,3‐dimethyl‐4,7‐methanobenzo[c]thiophene (I), 4,5,6,7‐tetrahydro‐1, 3‐dimethyl‐4,7‐ethanobenzo[c]thiophene (II), 4,7‐dihydro‐1, 3‐dimethyl‐4,7‐ethanobenzo[c]thiophene (III) and 4,5,6,7‐tetrahydro‐1,3‐dimethyl‐2‐phenyl‐4,7‐ethanobenzo[c]pyrrole (IV) were obtained by ring‐closure of the

ISSN:0165-0513    

DOI:10.1002/recl.19690880311

出版商:WILEY‐VCH Verlag    

年代:1969

数据来源: WILEY