摘要:

AbstractRate measurements have been made on the homogeneous sulphonation of toluene in aqueous sulphuric acid varying from 70.0 to 95.9 wt‐% at 5.0°, 25.0° and 45.0°. In addition, rate constants have been determined for the homogeneous sulphonation of ethylbenzene and isopropylbenzene at 25.0° in aqueous sulphuric acid solutions varying from 72.4 to 89.1 wt‐%. All reactions were found to be first order with respect to the aromatic compound. It is suggested that the differences in the overall rate constants for the sulphonation of toluene, ethylbenzene and isopropylbenzene originate predominantly from steric hindrance forortho‐sub

ISSN:0165-0513    

DOI:10.1002/recl.19630820202

出版商:WILEY‐VCH Verlag    

年代:1963

数据来源: WILEY

摘要:

AbstractThe microbiological transformation of 19‐nortestosterone withMycosphaerella latebrosaand withHypomyces aurantius, leading to the 16β‐ and 16α‐hydroxy‐derivatives, respectively, is

ISSN:0165-0513    

DOI:10.1002/recl.19630820203

出版商:WILEY‐VCH Verlag    

年代:1963

数据来源: WILEY

摘要:

AbstractFermentation of 19‐nortestosterone withCurvularia lunataor withBotrytis paeoniaeyielded mainly the 10β‐hydroxy‐derivative. Fermentation withAspergillus ochraceusafforded the 11α‐hydroxy‐derivative in good yield.10β‐Hydroxy‐19‐nortestosterone withCorynebacterium simplexyielded 10β, 17β‐dihydroxy‐19‐

ISSN:0165-0513    

DOI:10.1002/recl.19630820204

出版商:WILEY‐VCH Verlag    

年代:1963

数据来源: WILEY

摘要:

AbstractThe microbiological reaction of 19‐nortestosterone withColletotrichum derridisyielding mainly 12β‐hydroxy‐19‐nortestosterone, is d

ISSN:0165-0513    

DOI:10.1002/recl.19630820205

出版商:WILEY‐VCH Verlag    

年代:1963

数据来源: WILEY

摘要:

AbstractMicrobiological reaction of 19‐nortestosterone withPenicilliumsp.ATCC 11598 leading to about equal amounts of the 15α‐hydroxy‐derivative and 15α‐hydroxy‐19‐nor‐androst‐4‐one‐3,17‐dione is described. Fermentation of 19‐nortestosterone withFusarium orthocerasafforded mainly 15α‐hydroxy‐19‐norandrost‐4‐ene‐3,17‐dione and only minor a

ISSN:0165-0513    

DOI:10.1002/recl.19630820206

出版商:WILEY‐VCH Verlag    

年代:1963

数据来源: WILEY

摘要:

AbstractThe microbiological reactions of 19‐nortestosterone withHelminthosporium kusanoileading to the 6β‐hydroxy‐derivative and withHelminthosporium buchloesleading to the 14α‐hydroxy‐derivative ar

ISSN:0165-0513    

DOI:10.1002/recl.19630820207

出版商:WILEY‐VCH Verlag    

年代:1963

数据来源: WILEY

摘要:

AbstractThe α,β‐unsaturated thiolesters listed in Table I have been prepared by treating a mixture of a carbonyl compound and boron trifluoride with an acetylenic thioether (see reaction scheme 2). Good yields are obtained when ethers are used as solvents. The configuration of the esters prepared from aldehydes istrans. From unsymmetrical ketones mixtures ofcisandtransisomers are for

ISSN:0165-0513    

DOI:10.1002/recl.19630820208

出版商:WILEY‐VCH Verlag    

年代:1963

数据来源: WILEY

摘要:

AbstractAfter thermal decomposition of cupric benzoate in the presence of deuterium oxide 43% ofortho‐deutero‐benzoic acid can be obtained beside phenol. A radical mechanism for the air oxidation of benzoic acid to phenol under the catalytic influence of copper oxide should therefore be reasona

ISSN:0165-0513    

DOI:10.1002/recl.19630820209

出版商:WILEY‐VCH Verlag    

年代:1963

数据来源: WILEY

ISSN:0165-0513    

DOI:10.1002/recl.19630820210

出版商:WILEY‐VCH Verlag    

年代:1963

数据来源: WILEY

摘要:

AbstractThe suggestion is put forward that nucleophilic displacements of a group X in compounds RC  CX may occur through substitution at X rather than at the acetylenic carbon atom bearing

ISSN:0165-0513    

DOI:10.1002/recl.19630820211

出版商:WILEY‐VCH Verlag    

年代:1963

数据来源: WILEY