The use of carbonyl-stabilised ammonium ylides to access chiral glycidic amides and the corresponding aziridines has so far been limited to racemic trans-selective protocols. We herein report the development of an asymmetric approach to access such compounds with high levels of stereoselectivity using easily accessible chiral auxiliary-based ammonium ylides. The use of phenylglycinol as the chi...

The first enantioselective Ni-catalyzed reductive acyl cross-coupling has been developed. Treatment of acid chlorides and racemic secondary benzyl chlorides with a Ni(II)/bis(oxazoline) catalyst in the presence of Mn(0) as a stoichiometric reductant generates acyclic α,α-disubstituted ketones in good yields and high enantioselectivity without requiring stoichiometric chiral auxiliaries or prege...

In this paper, we provide a complete description of Hindi verbal inflection within the framework of Distributed morphology. We discuss the categories that are visible on the verb itself and on associated auxiliaries. We show how both analysis and generation are possible using this model. We also discuss the implementation of such linguistically motivated analysis in a morphological analyzer for...

Suux arrays and suux binary search trees are two data structures that have been proposed as alternatives to the classical suux tree to facilitate eecient on-line string searching. Here, we explore the relationship between these two structures. In particular, we present an alternative view of a suux array, with its auxiliary information, as a perfectly balanced suux binary search tree, and descr...

The class of clitic elements cannot be defined based on immediately obvious syntactic properties. Clitics belong to different syntactic categories: pronouns, auxiliaries, and sentential particles with a range of functions. In contrast, all clitics fall into the phonological category of non-stressed elements. That is why their ordering has been traditionally viewed as a phonological phenomenon. ...

The stereoselective synthesis of diethyl (S)or (R)-IX-[( O-pivaloylhexapyranosyl)amino]benzylphosphonates is achieved via Lewis acid catalyzed addition of diethyl phosphite to O-pivaloylated Nbenzylidene-{3-D-galactosylamine or N-benzylidene-IX-D-arabinopyranosylamine. The process can also be performed by a one-pot procedure selectively giving (S)-aminophosphonic acid derivatives from galactosy...