cover image: Journal of the Indian Chemical Society  June  1936

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20.500.12592/xqghcs

Journal of the Indian Chemical Society June 1936

1936

The aqueous solution of the soap was acidified with sulphuric acid and the resulting mixture was subjected to steam distillation till the distillate contained hardly any trace of acid. [...] The bulk of the liquid was carefully fractionated and the fraction boiling at 113.5° bad the equivalent weight 60.64 and consisted of pure acetic acid (m.p. [...] The a-resorcylaldehyde structure is supported by (i) analogy with known cases of Gattermann reaction on resorcinol derivatives in which the aldehyde group usually enters the a-position which is much more accessible ; and (ii) by the properties of the 3-carbethoxycoumarin resulting from the Knoevenagel condesation of the aldehyde with malonic ester the coumarin derivative in solution in concen [...] The formation of the pyrylium salt must be due to the further condensation of the 3-acetylcouniarin derivative initially formed with a second molecule of the hydroxy aldehyde to give the chalkone which with hydrochloric acid would form the pyrylitun salt. [...] The ketone has been assigned the constitution (VI) of a iq-acetylresorcinol derivative on the following grounds :— (i) A::alogy with other cases of HOesch reaction on resorcinol compounds (ii) the acetyl group cannot be introduced in the y-position in the resorcinol nucleus by the Hoesch reaction as shown by the observation that 4:6-diethylresorcinol does not undergo the HOesch reaction (iii) t
technology medicine science
Pages
85
Published in
India
SARF Document ID
sarf.120026
Segment Pages Author Actions
Frontmatter
i-iv S.S. Joshi, A.C. Sircar view
Chemical Examination of the Fixed Oil from the Seeds of Celastrus Paniculatus Willd
353-357 N. Kumaraswamy, B.L. Manjunath view
C-Alkyl Resorcinols. Part II. Synthesis of Polyalkyl Resorcinols
358-367 R.C. Shah, P.R. Mehta view
A New and Convenient Synthesis of 2 :4-Dihydroxybenzophenone
368-371 R.C. Shah, P.R. Mehta view
Variation of the Cataphoretic VeLcity of Colloidal.Pa: titles during Aggregation Part I
372-389 Jnanendra Mukherjee, Subodh Chaudhury, Krishnadhan Bhabak view
Peroxidases. Part III. A Potentiometric Method of Estimating their Activity
390-398 B.B. Dey, S Rengachari, M.V. Sitharman view
New Compounds of Gallium. Part I
399-403 Panchanan Neogi, Sarajit Nandi view
Oxidation of Acetyltetrahydroquinoline Sulphonic Acids
404-409 K.V. Bokil view
On Activated Charcoal. Part II. Purification by Wishing with Water and by Activation
410-418 Satyaprasad Roychoudhury, Sarajit Nandi, Jiban Banerjee view
A Synthesis of cis-and trans-dl-l-isoPropylcyclopropane-1:2-dicarboxylic Acid and Experiments towards the Resolution of the cis-dl-Acid
419-425 S.K. Ranganathan view
Backmatter
i-viii unknown view

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