cover image: Journal of the Indian Chemical Society  November  1932

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20.500.12592/3zm51r

Journal of the Indian Chemical Society November 1932

1932

cit.) and was undertaken with the object of studying how in compounds containing two dissimilar adjacent heterocyclic rings in their molecules the properties of the different heterocyclic nuclei are affected by one another and how the properties of such compounds differ from those of the corresponding compounds in which the two heterocyclic rings are separated by a benzene ring. [...] the colours of the compounds of the former type are invariably lighter than those of the compounds of the latter type. [...] The reason for the disparity in the formulae of ajmaline and rauwolfine lies in the fact that we had assigned the formula C 2 OH' 6()2N2 to ajmaline on the basis of dehydration at 100° in vacuo while the Dutch authors cumbusted their base after heating it to constant weight at 150° to remove the methyl alcohol of crystallisation. [...] But while all the general characteristics of the base rauwolfine point to its identity with ajmaline we have to postpone a definite conclusion to this effect as the Dutch authors have made no mention of the presence of an active H in rauwolfine in the course of its group analysis and have moreover showed after the method of Herzig and Meyer the absence of N-CH3 in the base whereas we believe to [...] CH2--S (I) I >C:NPh CO—NPh CH2—S >C :NPh CO N"FORMATION AND STABILITY OF POLYBROMIDE 547 These reactions clearly exclude the possibility of addition of bromine to the double bond of the 2-phenylimino grouping in the original b-thiohydantoin and the bromo-addition compound is evidently a hydropentabromide of the bromophenyltetrahydrothiazole (II) which is confirmed by its synthesis from the bromo
technology medicine science
Pages
90
Published in
India
SARF Document ID
sarf.120026
Segment Pages Author Actions
Frontmatter
i-iv J.C. Ghosh, A.C. Sircar view
Studies in Fluorenone. Part II
521-526 Anukul Sircar, Kshitish Bhattacharyya view
Studies in Heterocyclic Compounds. Part II
527-532 Anukul Sircar, Indu Pal view
Mercuration of Compounds Containing a Reactive Methylene (-CH2) Group by means of Mercuric Chloride. Part II
533-538 K.G. Naik, R.P. Patel view
The Alkaloids of Rattwolfia Serpentina Benth. Part I
539-544 Salimuzzaman Siddiqui, Rafat Siddiqui view
The Formation and Stability of Polybromide Derivatives of Heterocyclic Compounds. Part I. The Bromination of Diphenyl- /-thiohydantoin and its ortho-Tolyl Homologue
545-552 Mohammad Farooq, Robert Hunter view
The Alkaloids of Holarrhena Antidysenterica Part I. Three New Alkaloids from the Bark of Indian Holarrhena and New Methods of Isolation and Further Purification of Conessine
553-564 Salimuzzaman Siddiqui, P. Pillay view
Metallic Cerium in Organic Synthesis
565-572 Jagaraj Behari Lal, Sikhibhushan Dutt view
A New Synthesis of 3:10-Dimethoxytetrahydro-protoberberine
573-576 Satyendra Chakravarti, N. Vaidyanathan, A. Venkatasubban view
An Attempted.Synthesis of Oxyprotoberberine and a Synthesis of 3-Methioxyoxyprothberberine
577-582 Satyendra Chakravarti, A.P. Nair view
A Study of the Conductivity of Solutions of Zinc oxide in Caustic Soda Solution
583-590 Frederick Snell view
Determination of Flocculation Values from Measurements of the Rate of Coagulation of an Arsenic Sulphide Sol
591-598 D.N. Ghosh view
A Preliminary Note on a New Method of Synthesising Benzopyrylium Compounds
599-600 M.N. Goswami, Amiya Chakravarti view
Backmatter
i-vi unknown view

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