Výsledky vyhledávání - "P. H. Enthoven"

Investigations on syntheses 'under physiological conditions': I. Comparison of the behaviour of ammonia and methylamine as one of the reaction components

Autor: P. E. Verkade, H. C. Beyerman, P. H. Enthoven

Publikováno v: Recueil des Travaux Chimiques des Pays-Bas. 82:1199-1229

The behaviour of the following six combinations of compounds has been studied “under physiological conditions”: glutaraldehyde or succinaldehyde, methylamine or ammonia, acetonedicarboxylic acid or diethyl acetonedicarboxylate. The pH was maintai

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2155f54d90c4c97d83792c7f31818452
https://doi.org/10.1002/recl.19630821210

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Investigation of the alkaloids of Punica Granatum L. by partition chromatography

Autor: P. H. Enthoven, J. P. Wibaut, H. C. Beyerman

Publikováno v: Recueil des Travaux Chimiques des Pays-Bas. 73:102-108

In recent literature doubts are expressed about the accepted structure of the anthelmintic substance pelletierine, one of the four alkaloids said to occur in the bark of the pomegranate tree (Punica granatum L.) It has been suggested that the “pell

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d0b7b88f1df0aefd709558af3c209ac2
https://doi.org/10.1002/recl.19540730204

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Synthesis of α-phenacyl-N-methylpiperidine ('sedamine-ketone') under pseudo-physiological conditions.(Short communication)

Autor: H. C. Beyerman, P. H. Enthoven

Publikováno v: Recueil des Travaux Chimiques des Pays-Bas. 75:82-84

The condensation of N-methyl-α-piperidol (I), which we consider to be a cyclic tautomer of 5-methylaminopentanal (II), with benzoylacetic acid is reported to give α-phenacyl-N-methylpiperidine (“Sedamine-ketone”, IVa) in yields up to 50% depend

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8c38c42101fa048d6b0fd8ee2e1f8296
https://doi.org/10.1002/recl.19560750110

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Akademický článek

ADMINISTREREN EN ECONOMISCHE POLITIEK1 )

Autor: Adolf J. H. Enthoven

Publikováno v: MAB, Vol 47, Iss 10, Pp 440-445 (1973)

Externí odkaz: https://doaj.org/article/3c37ced4c81141798edc3bf9384a4c7f

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On the determination of tropan-3-one in the form of its reineckate

Autor: H. C. Beyerman, P. E. Verkade, P. H. Enthoven

Publikováno v: Recueil des Travaux Chimiques des Pays-Bas. 82:1230-1233

The use of ammonium reineckate for the isolation and quantitative determination of tropan-3-one formed in Schopf reactions, as recommended by Gal, Simonyi, and Tokar, is studied and appears to be by no means advisable.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9eb87764cf109fbc5bfecf53cce2a185
https://doi.org/10.1002/recl.19630821211

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