منابع مشابه
Cyclic Oligophosphonic Anhydrides Stable in Aqueous Media
Depending on reaction conditions, the phosphonylation of N-alkylacetamides with H3PO3-P C I3 in B-HC1 media (B = Py, Bu3N) gives either l-alkylaminoethylidene-l,l-bisphosphonic acids (la—e) or previously unknown l-alkylaminobutane-l,l,3,3-tetrayl-tetrakisphosphonic dianhydrides (2a-e). The latter convert into monocyclic forms (3a-e) under mild acidic hydrolysis. Acyclic forms (4a-e) cannot be i...
متن کاملAerosols of Isocyanates, Amines and Anhydrides
This thesis presents methods for air sampling and determination of isocyanates, amines, aminoisocyanates and anhydrides. These organic compounds are generated during production or thermal degradation of polymers such as polyurethane (PUR) or epoxy. Isocyanates, amines and anhydrides are airway irritants known to cause occupational asthma. Some of the isocyanates and diamines are listed as human...
متن کاملThe enzymic hydrolysis of acid anhydrides.
Aebi, H. (1953). Helv. physiol. acta, 11, 96. Boyd, G. E., Schubert, J. & Adamson, A. W. (1947). J. Amer. chem. Soc. 69, 2818. Conway, E. J. & Hingerty, D. (1946). Biochem. J. 40, 561. Conway, E. J. & McCormack, J. I. (1953). J. Physiol. 120, 1. Davies, F., Davies, R. E., Francis, E. T. B. & Whittam, R. (1952). J. Physiol. 118, 276. Deutsch, W. (1936). J. Physiol. 87, 56P. Domingo, W. R. & Klyn...
متن کاملPhosphonic Acid Anhydrides [R P 02]„: Oligomerization and Structure
Z. Naturforsch. 50b, 855-858 (1995); received November 11, 1994 Organophosphonic Acid Anhydrides, Phosphonic Acid Anhydrides, Stereochemistry, NMR Spectra The phosphonic acid anhydrides of the general formula [R P 0 2]„ have been prepared with R = Me, Et, z-Pr, r-Bu, and Ph from the corresponding phosphonic acids and their chlorides and esters. Mass spectrometric data indicate that the trimers ...
متن کاملCrosslinked poly ( ester anhydrides ) for controlled drug delivery
DOCTORAL DISSERTATIONS A ato-D D 10 /2 13 Bioresorbable polymers are extensively studied materials for medical applications. In this thesis, novel bioresorbable polymers, hydrophobically-modified crosslinked poly(ester anhydride) networks, were developed and characterized with the aim of obtaining suitable matrices for drug release applications. In these poly(ester anhydride) networks were comb...
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ژورنال
عنوان ژورنال: The Journal of the Society of Chemical Industry, Japan
سال: 1970
ISSN: 0023-2734,2185-0860
DOI: 10.1246/nikkashi1898.73.11_2371