This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1919 Excerpt: ...imide of methylethylmaleic acid, and the same product is also obtained by the dry distillation of haematinic acid (I). Both the haematinic acids have been converted into methylethylmaleic anhydride, which has been repeatedly synthesised. The changes may be represented as follows: CH3--C--CO NH Tt--HOgC. CH2CH2C--CO V ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1919 Excerpt: ...imide of methylethylmaleic acid, and the same product is also obtained by the dry distillation of haematinic acid (I). Both the haematinic acids have been converted into methylethylmaleic anhydride, which has been repeatedly synthesised. The changes may be represented as follows: CH3--C--CO NH Tt--HOgC. CH2CH2C--CO V CH3-C--CO CH3--C--CO NH " 0 CH3--C--CO / C2H5--C--CO C2H6--C--CO II 0 NH. / H02C.CH2CH2C-CO--Methylethylmaleio anhydride. The relation between haemin and haematin is indicated to some extent by the following observations. Haematin is obtained from haemin by the action of caustic soda, and, on the other hand, haematin is converted into haemin by the action of hydrochloric acid; consequently, haemin is frequently spoken of as haematin hydrochloride. This, however, is incorrect, as apparently a hydroxyl group is replaced by chlorine. Moreover, if haemin is heated with aniline, hydrochloric acid is removed, a product named dehydrohaematin being formed which is not identical with haematin. Haematin and haemin, as previously mentioned, contain a considerable quantity of iron, but this is readily removed by the action of strong acids, leaving an iron-free pigment named haeniatoporphyrin. The reaction may be represented as follows: C3 H,2O4N4FeCl + 2HBr + 2H2O Haemin. = C33H3s06N4 + FeBra + HC1 Hnematoporphyrin. Haematoporphyrin, on partial reduction with hydriodic acid, yields mesoporphyrin: CO + 2H3 = CHN, + 2HaO Haematoporphyrin. Mesoporphyrin. On further reduction with hydriodic acid, the mesoporphyrin ia converted into a volatile compound, haemopyrrole,1 which is probably a mixture of pyrrole homologues consisting mainly of two dimethyl ethyl pyrroles. From recent researches of Willstatter and M. Fischer1 it appears that a series of additive ...
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Add this copy of Organic Chemistry for Advanced Students Volume 3 to cart. $70.74, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2016 by Palala Press.
