Ningxia IRS Exposes 4 Cases of Tax Violations
Time of Update: 2020-05-13
the original title: Ningxia IRS exposed 4 tax violations On August 10, Ningxia IRS to Ningxia also and medical device scounbar Co., Ltd. and other 4 units of undercounting income and false VAT invoices and other means to evade tax illegal
ACS catalyst: the series C-H reaction of aldoxime ether and heteroarene catalyzed by IR
Time of Update: 2019-11-29
(source: ACS catalyst.) in summary, the author used the C − H / C − H cross coupling / cyclization strategy of aldoxime ether and heteroaromatics to simply and efficiently realize the one-step preparation of phenanthridine derivatives.
JACS: ligand regulated IR catalyzed regionally divergent hydroxylation of unactivated olefins
Time of Update: 2019-07-25
Due to the abundant adjacent n, O structures and many available olefin precursors in bioactive natural products and drugs, the regioselective and stereoselective hydroxylation
Synthesis of arylacetaldehyde from arylboric acid and 1,3-dioxolapentene-2-one catalyzed by angelw: IR
Time of Update: 2019-07-03
Int. ed.) the author speculates the possible mechanism (scheme 2): first, the catalyst IR and the arylboric acid generate the [IR] - AR intermediate a through the metal transfer process.
Chen Gong He Gang team of Nankai University: efficient construction of new chiral IR (III) catalyst
Time of Update: 2019-06-30
γ - lactam is a kind of very important compounds, which widely exists in drug molecules and natural products
At present, there are many methods to prepare racemic γ
Asymmetric allyl alkylation of amidenol catalyzed by angelw: IR
Time of Update: 2019-06-02
Int. ed.) under the optimal reaction conditions, the author investigated the substrate range (scheme 2) of allyl carbonyl compound 1.
JACS: IR catalyzed intermolecular branched selective allylic C-H amidation of nonactivated terminal olefins
Time of Update: 2019-02-22
Recently, the team of Professor Tomislav rovis of Columbia University reported that IR (III) catalyzes the intermolecular branched chain selective allyl C-H amidation of non activated terminal olefins.
Direct asymmetric hydrogenation of n-alkylimines catalyzed by JACS: IR (III) H
Time of Update: 2018-12-20
SOC.) previously, the author found that the catalyst IR (I) - maxphox has high activity and selectivity in the hydrogenation of n-aryleneamines.
JACS: sukbok Chang group realizes stereoselective haloamidation of alkynes catalyzed by IR (III)
Time of Update: 2018-09-30
SOC.) conclusion: sukbok Chang research group first developed the insertion method of IR (III) catalytic imide into alkyne by using the strategy of ligand participation.
Research team of Professor Zhang Wanbin of Shanghai Jiaotong University: IR / Cu Bimetallic
Time of Update: 2018-03-13
The research group of Zhang Wanbin, Professor of Shanghai Jiaotong University, has been devoted to the development of cooperative catalytic system for a long time and applied this strategy to asymmetric allyl substitution reaction.
The application of multivariate correction in FT-IR quantitative analysis
Time of Update: 2007-01-31
The multivariate correction methods include classical Zui small two multiplication (CLS), inverse Zui small two multiplication (ILS), Q-matrix, partial Zui small two multiplication (PLS) and basic component regression (PCR).