Branch capture reactions: displacers derived from asymmetric PCR

Branch capture reactions: displacers derived from asymmetric PCR.

Branch capture reactions (BCR) contain three DNA species: (i) a recipient restriction fragment terminating in an overhang, (ii) a displacer strand containing two adjacent sequences, with one complementary to the overhang and to contiguous nucleotides within the recipient duplex and (iii) a linker which is complementary to the second displacer sequence. Branched complexes containing all three sp...

Organocatalysed asymmetric Mannich reactions.

The asymmetric Mannich reaction ranks among the most potent enantioselective and diastereoselective C-C-bond forming reactions. In recent years, organocatalysed versions of asymmetric Mannich processes have been increasingly reported and used in a rapidly growing number of applications. This tutorial review provides an overview of the recent history of the asymmetric organocatalysed Mannich rea...

Asymmetric strecker reactions.

Three-Nucleon Electroweak Capture Reactions

Recent advances in the study of the p−d radiative and μ−3He weak capture processes are presented and discussed. The three-nucleon bound and scattering states are obtained using the correlated-hyperspherical-harmonics method, with realistic Hamiltonians consisting of the Argonne v14 or Argonne v18 two-nucleon and Tucson-Melbourne or Urbana IX three-nucleon interactions. The electromagnetic and w...

Direct asymmetric aldol reactions catalyzed by lipase from porcine pancreas.

Porcine pancreas lipase type II (PPL II) exhibited unnatural catalytic activity in direct asymmetric aldol reactions between cyclic ketones and aromatic or heteroaromatic aldehydes in acetonitrile in the presence of phosphate buffer. A wide range of substrates was accepted by the enzyme to afford the corresponding aldol products in low to high yields (10-98%), with moderate to excellent enantio...