Synthesis of Passerini adducts from aldehydes and isocyanides under the auxiliary of water

2015 ◽  
Vol 2 (10) ◽  
pp. 1326-1333 ◽  
Author(s):  
Ming Li ◽  
Bin Qiu ◽  
Xiang-Jing Kong ◽  
Li-Rong Wen
Keyword(s):  

An efficient protocol for the synthesis of the Passerini adducts α-acyloxycarboxamides from aldehydes, isocyanides and water in a molecular ratio of 3 : 1 : 3 was described.

1930 ◽  
Vol 20 (4) ◽  
pp. 618-639 ◽  
Author(s):  
G. W. Robinson

1. The changes in composition of the clay fraction in different horizons of some typical North Welsh profiles have been studied.2. The changes in the molecular ratio of silica to sesquioxides (SiO2/Al2O3+ Fe2O3) throughout a soil profile afford an indication of the nature of the eluviation which has affected the mineral portion of the soil.3. The data for North Welsh soils indicate a general tendency to enrichment of the lower layers in sesquioxides, particularly ferric oxide, at the expense of the surface layers.4. The silica-sesquioxide ratio of the clay fraction is an important aid to series definition.5. The soils of North Wales, particularly in the uplands, have probably been subjected to considerable erosion in the past. The profiles are therefore considered to be more or less truncated.


2021 ◽  
Author(s):  
Akihisa Kimura ◽  
Hiroyuki Takahama ◽  
Toshio Nishikimi ◽  
Seiji Takashio ◽  
Tomohiro Hayashi ◽  
...  

Langmuir ◽  
1999 ◽  
Vol 15 (21) ◽  
pp. 7403-7405 ◽  
Author(s):  
Alexander Patist ◽  
Surekha Devi ◽  
Dinesh O. Shah

2018 ◽  
Vol 833 ◽  
pp. 370-378 ◽  
Author(s):  
Manuel Merlos ◽  
Enrique Portillo-Salido ◽  
Alex Brenchat ◽  
Bertrand Aubel ◽  
Jordi Buxens ◽  
...  

1959 ◽  
Vol 37 (1) ◽  
pp. 793-800 ◽  
Author(s):  
P. J. Moloney ◽  
M. A. Aprile

Serum from a horse which had received a series of injections of crystalline ox insulin showed typical flocculation with a solution of crystalline ox and pig insulins and with crude insulin extracted from the pancreas of the rabbit, horse, monkey, whale, and human. Flocculation was due to insulin and its corresponding antibody, since both insulin and antiinsulin, measured by mouse convulsion test, could be recovered from floccules. The ratio of insulin antibody to insulin (equivalence zone) is in the order of 497 to 553 micrograms per unit of insulin (40 μg). This corresponds to a molecular ratio of antibody: insulin of 3:1.


1985 ◽  
Vol 4 (6) ◽  
pp. 637-642 ◽  
Author(s):  
T. Aoi ◽  
T. Higuchi ◽  
R. Kidokoro ◽  
R. Fukumura ◽  
A. Yagi ◽  
...  

1 Energy dispersive X-ray analysis was performed on the renal tubular cells of two patients with inorganic mercury intoxication. 2 Some lysosomes of these cells consisted of unusual matrices of aggregated electron-dense grains which were positive for mercury, selenium and sulphur. 3 Though maps of the specific X-rays of both mercury and selenium coincided exactly with these lysosomes, the molecular ratio of selenium to mercury ranged between zero and 2.9. 4 It is unlikely that the trace element of selenium and exogenous inorganic mercury are deposited in the lysosomes independent of each other, but rather their coexistence in the characteristic lysosomes strongly suggests a compound formed by binding mercury to the SeH residues of selenoprotein.


2000 ◽  
Vol 44 (9) ◽  
pp. 765-772 ◽  
Author(s):  
Makiko Watanabe ◽  
Qiu Zhong ◽  
Takeshi Kobayashi ◽  
Wataru Kamitani ◽  
Keizo Tomonaga ◽  
...  

Author(s):  
Max H. Hey

In 1865 A. Breithaupt described a new mineral from Herrengrund, Hungary, to which he gave the name of fauserite. It formed very pale pink crystalline aggregates and prismatic crystals, with prism angle near 88°42′ (over a), apparently orthorhombic, and cleavage b(010). Two other prisms with angles (over a) 54°39′ and 107° 50′ were observed, and a pyramid p, giving mp= 52° ; these would correspond to forms (210), (340), and (111), and the angles are near those of epsomite. An analysis by Mollnár gave the figures shown under I below—a magnesium and manganese sulphate hexahydrate, with the molecular ratio MgSO4(Mn,Mg)SO4 = 31.62 %. There is no evidence that the analysed material (stated to be crystalline) was homogeneous.


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