【摘 要】
：
A series of C2-symmetric and asymmetric chiral thiourea derivatives were synthesized from commercial L-phenylalanine. All of the new compounds have been fully c
【机 构】
：
The State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology
论文部分内容阅读
A series of C2-symmetric and asymmetric chiral thiourea derivatives were synthesized from commercial L-phenylalanine. All of the new compounds have been fully characterized by IR, 1H NMR, 13C NMR, MS spectra and elemental analyses. The chiral thioureas were used as chiral ligands in the catalytic enantioselective ethylation of aldehydes with diethylzinc, the corresponding sec-alcohols were gained with excellent enantioselectivities (up to 87.1 % ee) and high yields (up to 76.7%) after the conditions were optimized.
其他文献
The NIR micro-images of ibuprofen tablets were collected in this research. Compare correlation imaging and principal component analysis (PCA) with histogram wer
We discuss the modes of the Alfvén waves in the accretion disk with a toroidal magnetic field in black hole low mass X-ray binaries in a rotating frame.By solv
A novel 5-((4-(6,7-dihydrothieno[3,2-c]pyridin-5(4H)-ylsulfonyl)phenylamino)methyl)quinolin-8-ol (HTPSMQol) was synthesized by optimized reaction of 4-(6,7-dihy
Background Accurate knowledge of the spinal structural functions is critical to understand the biomechanical factors that affect spinal pathology. Many studies
Apolipoprotein B100 (apoB-100) is a major protein of the cholesterol-rich low-density lipoprotein (LDL) and reflects a better assessment of total atherogenic bu
S5 0716+714 is one of the targets in our long term blazar monitoring program carried out with the 1.56-m telescope at Sheshan Station of Shanghai Astronomical O
A novel enantiopure salen ligand bearing a diphenylphosphine oxide on the 3-position of one aromatic ring was synthesized and combined with Ti(Oi-Pr)4 as a mono
4- and 6-desphenyl analogues of (-)-clausenamide, 6 and 7, were prepared in optical active form from commercially available D-pyroglutamic acid and the known ra