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2 results on '"KA-HO NG"'

1. Subsampled block-matching for zoom motion compensated prediction

Author

Lai-Man Po, Ka-Man Wong, Kwok-Wai Cheung, and Ka-Ho Ng

Subjects
Computational complexity -- Evaluation, Data compression -- Analysis, Image coding -- Methods, Interpolation -- Usage, Business, Computers, Electronics, Electronics and electrical industries
Published
2010

2. Pd-catalyzed intermolecular ortho-C-H amidation of anilides by N-nosyloxycarbamate

Author

Ka-Ho Ng, Chan, Albert S.C., and Wing-Yiu Yu

Subjects
Amides -- Chemical properties, Aniline -- Chemical properties, Carbamates -- Structure, Carbamates -- Chemical properties, Organometallic compounds -- Structure, Organometallic compounds -- Chemical properties, Palladium catalysts -- Chemical properties, Chemistry
Abstract

A palladium-catalyzed ortho-C-H amidation of anilides by N-nosyloxycarbamates which could be carried out under relatively mild conditions was developed for the synthesis of 2-aminoanilines. The amidation reaction is found to be probably initiated by rate-limiting C-H cyclopalladation to form an arylpalladium complex, followed by nitrene functionalization.

Published
2010

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