منابع مشابه
N-(p-Tolylsulfonyl)-l-asparagine
In the title compound, C(11)H(14)N(2)O(5)S, the amide O atom acts as a hydrogen-bond acceptor from a carboxyl-ate O atom and a secondary amino N atom. In addition, one of the sulfonyl O atoms and the carbonyl O atom of the carboxyl group also form hydrogen bonds with the primary amido N atom. These intermolecular hydrogen-bonding inter-actions give rise to a layer structure, with the layers par...
متن کاملN-(Phenylsulfonyl)-l-asparagine
In the title compound, C(10)H(12)N(2)O(5)S, one of the sulfonyl O atoms is hydrogen bonded to the amido N atom of an adjacent mol-ecule. There is also a weak hydrogen-bonding inter-action between the other sulfonyl O atom and the secondary amino N atom. In addition, the amido O atom is also hydrogen bonded to a carboxyl O atom. These hydrogen-bonding inter-actions give rise to a layer structure...
متن کاملWolff rearrangement of diazo ketones derived from N-p-tolylsulfonyl- protected á- and â-amino acids
Diazo ketones derived from N-p-tolylsulfonyl (tosyl)-protected áand â-amino acids have been synthesized and their diazo decomposition under standard Wolff rearrangement conditions, PhCO2Ag–Et3N–MeOH, has been investigated. It is observed that, under these conditions, several different reaction pathways, including direct carbene N]H insertion, are possible. The reaction is markedly affected by t...
متن کاملl-Asparagine–l-tartaric acid (1/1)
In the title compound, C(4)H(8)N(2)O(3)·C(4)H(6)O(6), the amino acid mol-ecule exists as a zwitterion and the carb-oxy-lic acid in an un-ionized state. The tartaric acid mol-ecules are linked into layers parallel to the ab plane by O-H⋯O hydrogen bonds. The amino acid mol-ecules are also linked into layers parallel to the ab plane by N-H⋯O and C-H⋯O hydrogen bonds. The alternating tartaric acid...
متن کاملTight embedding of subspaces of L p in l n p for even p ∗ Gideon Schechtman
Using a recent result of Batson, Spielman and Srivastava, We obtain a tight estimate on the dimension of lp , p an even integer, needed to almost isometrically contain all k-dimensional subspaces of Lp. In a recent paper [BSS] Batson, Spielman and Srivastava introduced a new method for sparsification of graphs which already proved to have functional analytic applications. Here we bring one more...
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ژورنال
عنوان ژورنال: Acta Crystallographica Section E Structure Reports Online
سال: 2010
ISSN: 1600-5368
DOI: 10.1107/s1600536810004034