摘要:

AbstractAcetylation of 2‐fluoro and 2‐chlorofluorene attacks the 7‐position. Thus, 2‐fluoro‐, 2‐chloro‐ and also 2‐bromo‐7‐vinylfluorene have been prepared. Analogously 4‐fluoro‐and 4‐bromo‐1‐vinylnaph

ISSN:0021-2148    

DOI:10.1002/ijch.196300002

出版商:WILEY‐VCH Verlag    

年代:1963

数据来源: WILEY

摘要:

AbstractMethyl isobutyl ketone was found to be a suitable extracting and concentrating medium for the quantitative separation of microgram amounts of ferric iron from large quantities of copper. The iron is stripped into an aqueous phase containing hydroxylamine hydrochloride and after adjusting thepH the ferrous iron is directly determined colorimetrically witho‐phenanthrolin

ISSN:0021-2148    

DOI:10.1002/ijch.196300003

出版商:WILEY‐VCH Verlag    

年代:1963

数据来源: WILEY

摘要:

Abstractα‐N‐methyl DL‐asparagine was rapidly hydrolyzed bySal. carmelandSal. hadarpreparations. Higher alkyl derivatives were not hydrolyzed and inhibited L‐asparagine hydrolysis.N (β DL‐aspartyl) methyl amine was not attacked by the enzymatic preparations and inhibited competitively the hydrolysis of L‐asparagine. Similarly, higher β‐N‐alkyl derivatives of asparagine were not hydrolyzed and inhibited L‐asparagine hydrolysis, although to a less extent. D‐asparagine was not hydrolyzed and inhibited competitively the cleavage of L‐asparagine.Zn+ +, Mg+ +, Cu+ +inhibited the enzyme action, while Br−, Cl−, I−, NO3−had no infl

ISSN:0021-2148    

DOI:10.1002/ijch.196300004

出版商:WILEY‐VCH Verlag    

年代:1963

数据来源: WILEY

摘要:

AbstractThis paper reports on the gamma‐radiolysis of aqueous or absolute ethanolic solutions of fourteen different organic optically active compound

ISSN:0021-2148    

DOI:10.1002/ijch.196300005

出版商:WILEY‐VCH Verlag    

年代:1963

数据来源: WILEY

摘要:

AbstractThe 1–4 additions of mono nitroparaffins to cinnamylidenteacetophenone are described and discussed according to spectroscopical dat

ISSN:0021-2148    

DOI:10.1002/ijch.196300006

出版商:WILEY‐VCH Verlag    

年代:1963

数据来源: WILEY

摘要:

AbstractB‐Trifluoro‐, B‐triiodo‐ and B‐triazidoborazines were prepared by the reaction of B‐trichloroborazines with sodium fluoride, sodium iodide and sodium azide respectively, in suitable solvents. The reaction of B‐trifluoro‐N‐triphenyl borazine with Grignard rea

ISSN:0021-2148    

DOI:10.1002/ijch.196300007

出版商:WILEY‐VCH Verlag    

年代:1963

数据来源: WILEY

摘要:

AbstractOleuropein‐the bitter tasting substance of green olives was isolated and identified by the authors. In this paper, the assumption that the debittering and darkening of green olives is due to oxidative changes induced in the orthodiphenol nucleus of the oleuropein is discussed.Findings indicate that the debittering and darkening could be carried out by a method other than by the conventional alkali process. Thus, it would be possible to produce, higher quality, and more oil‐containing canned oli

ISSN:0021-2148    

DOI:10.1002/ijch.196300008

出版商:WILEY‐VCH Verlag    

年代:1963

数据来源: WILEY

ISSN:0021-2148    

DOI:10.1002/ijch.196300009

出版商:WILEY‐VCH Verlag    

年代:1963

数据来源: WILEY

ISSN:0021-2148    

DOI:10.1002/ijch.196300010

出版商:WILEY‐VCH Verlag    

年代:1963

数据来源: WILEY

ISSN:0021-2148    

DOI:10.1002/ijch.196300011

出版商:WILEY‐VCH Verlag    

年代:1963

数据来源: WILEY