scholarly journals XLIV.—Quantitative reduction by hydriodic acid of halogenated malonyl derivatives. Part I. The amides and s.-di-alkyl- and- aryl-substituted amides of mono- and di-bromomalonic acid

1921 ◽  
Vol 119 (0) ◽  
pp. 359-379 ◽  
Author(s):  
John Valentine Backes ◽  
Ralph Winton West ◽  
Martha Annie Whiteley
1994 ◽  
Vol 122 (1) ◽  
pp. 91-105 ◽  
Author(s):  
M. L. Nguyen ◽  
K. M. Goh

SUMMARYA field plot experiment of 271 days duration was conducted on New Zealand irrigated pastures, commencing in the summer (January) 1988, on a Templeton silt loam soil (Udic Ustochrept) by applying 35sulphur (35S)-labelled urine (250 μCi/g S with 1300 μg S/ml) to field plots (600 × 600 mm) at a rate equivalent to that normally occurring in sheep urine patches (150 ml/0·03 m2) to investigate the distribution, transformations and recovery of urinary S in pasture soil–plant systems and sources of plant-available soil S as influenced by the available soil moisture at the time of urine application and varying amounts of applied irrigation water. Results obtained showed that c. 55–90% of 35S-labelled urine was incorporated into soil sulphate (SO42−), ester SO42− and carbon (C)-bonded S fractions within the major plant rooting zone (0–300 mm), as early as 27 days after urine application. Hydriodic acid (Hl)-reducible and C-bonded soil S fractions showed no consistent trend of incorporation. On day 271, labelled-S was found in soil SO42−, Hl-reducible S and C-bonded S fractions to a soil depth of 500 mm, indicating that not only SO42− but also organic S fractions from soils and 35S-labelled urine were leached beyond the major rooting zone. A large proportion (c. 59–75%) of 35S-labelled urine was not recovered in pasture soil–plant systems over a 271-day period, presumably due to leaching losses beyond the 0–300 mm soil depth. This estimated leaching loss was comparable to that (75%) predicted using the S model developed by the New Zealand Ministry of Agriculture. The recovery of urinary S in soil–plant systems over a 271-day period was not affected by different amounts of irrigation water applied 7 days after urine application to soil at either 50 or 75% available water holding capacity (AWHC). However, significantly lower S recovery occurred when urinary S was applied to the soil at 25% AWHC than at field capacity, suggesting that urinary S applied at field capacity might not have sufficient time to be adsorbed by soil particles, enter soil micropores or be immobilized by soil micro-organisms. Both soil ester SO42− and calcium phosphate-extractable soil S in urine-treated soils were found to be major S sources for pasture S uptake. Labelled S from 35S-labelled urine accounted for c. 12–47% of total S in pasture herbage.


2000 ◽  
Vol 61 (5) ◽  
pp. 5326-5329 ◽  
Author(s):  
Osamu Inomoto ◽  
Koji Abe ◽  
Takashi Amemiya ◽  
Tomohiko Yamaguchi ◽  
Shoichi Kai

2000 ◽  
Vol 77 (4) ◽  
pp. 505
Author(s):  
Fred H. Greenberg
Keyword(s):  

1866 ◽  
Vol 5 ◽  
pp. 409-413
Author(s):  
Alex. Crum Brown

The relation of mandelic acid to benzoic aldehyd is so precisely the same as that of lactic acid to acetic aldehyd, that whatever constitution we assume for the latter acid, a similar one must be ascribed to the former.The researches of Kolbe and Lautemann, and of Wislicenus, prove that lactic acid is oxypropionic acid. Mandelic acid must therefore be oxytoluic acid, and, indeed, it has been so formulated by Kolbe in his work on Organic Chemistry.


1870 ◽  
Vol 18 (114-122) ◽  
pp. 499-502

When a stream of sulphuretted hydrogen is passed through a solution of benzonitrile in alcoholic ammonia, the liquid, after the lapse of a few hours, deposits fine yellow needles, which are the thiobenzamide, C 7 H 7 NS = C 7 H 5 S} N H} N H} N, discovered by M. Cahours. It can be obtained in a pure state by recrystallization from boiling water. When a cold saturated alcoholic solution of this body is mixed with an alcoholic solution of iodine, the latter is immediately decolorized with separation of sulphur. If the addition of iodine solution be continued until even after a short boiling free iodine remains, which can readily be detected by starch-paste, the solution filtered from the sulphur, and poured into water, solidifies to a mass of white interlaced needles, which can readily be freed from adhering hydriodic acid by washing with cold water.


1964 ◽  
Vol 86 (6) ◽  
pp. 1139-1145 ◽  
Author(s):  
Peter A. S. Smith ◽  
Husni R. Alul ◽  
Reuben L. Baumgarten

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