Pd-Catalyzed Intramolecular Chemoselective C(sp2)–H and C(sp3)–H Activation of <i>N</i>-Alkyl-<i>N</i>-arylanthranilic Acids

Hu, Zheyao; Zhang, Yan; Li, Xin-Chang; Zi, Jing; Guo, Xun‐Xiang

doi:10.1021/acs.orglett.8b03976

Cited by 19 publications

(6 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Both the above approaches work well only in the low-energy region and are model dependent. To access the form factor with the dipion invariant mass at order of m Z , the PQCD approach is more appropriate [25][26][27][28]. In this paper, we will evaluate the Z 0 → π + π − (K + K − ) decay rate up to the next-to-leading order (NLO) of the strong coupling α s and at the leading power of 1/m Z in the PQCD formalism [5].…”

Section: Introductionmentioning

confidence: 99%

Z→π+π− , K
Cheng
¹
,
Qin
²

2019
Phys. Rev. D
11
1
8
0
View full text Add to dashboard Cite

We study two rare decays, Z → π + π − and K + K − , in the perturbative QCD approach up to the nextto-leading order of the strong coupling and the leading power of 1/m Z , m Z being the Z boson mass.The branching ratios B(Z → π + π − ) = (0.83 ± 0.02 ± 0.02 ± 0.04) × 10 −12 and B(Z → K + K − ) = (1.74 +0.03 −0.05 ± 0.04 ± 0.02) × 10 −12 are obtained and can be measured at a tera-Z factory. Because the subleading-power contributions to the branching ratios are negligible, and the leading one does not depend on any free parameter, the two channels can serve as a touchstone for the applicability of the perturbative QCD approach.

show abstract

Section: Introductionmentioning

confidence: 99%

Z→π+π− , K
Cheng
¹
,
Qin
²

2019
Phys. Rev. D
11
1
8
0
View full text Add to dashboard Cite

show abstract

“…1m. 58 1t. 62 1 H NMR (500 MHz, CDCl 3 ) δ (ppm) 8.10 (s, 2H), 7.55 (d, J = 8.5 Hz, 2H), 7.24 (d, J = 8.0 Hz, 2H), 3.78 (s, 3H).…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

Substrate-Controlled Regiodivergent Synthesis of Fluoroacylated Carbazoles via Friedel–Crafts Acylation

Xiao

et al. 2021

J. Org. Chem.

View full text Add to dashboard Cite

A general, efficient, and substrate-controlled regiodivergent trifluoroacetylation of carbazoles has been developed through Friedel–Crafts acylation. This strategy was applicable to a wide scope of readily available substituted carbazoles at air atmosphere without using a metal catalyst, affording the corresponding trifluoroacetylated carbazoles in up to 99% yield. The divergency of the products and the orientation rules have been illustrated based on different substituents on carbazole rings. This method could also be extended to the synthesis of chlorodifluoroacetylated and pentafluoropropionylated carbazoles, which have been achieved for the first time.

show abstract

“…[19] and Ref. [20], respectively, following which, the NLO correction to timelike pion form factor is obtained by the analytical continuum technology [36,37]. Another important correction is for the scalar pion form factor appeared in the factorizable annihilation diagrams [38], which provides the dominate strong phase in PQCD approach to deal with two-body nonleptonic charmless B decays.…”

Section: The Pqcd Formulaementioning

confidence: 99%

Pion and kaon form factors in the perturbative QCD approach

Cheng

2019

Phys. Rev. D

View full text Add to dashboard Cite

We present the most accurate calculation for the pion and kaon electromagnetic form factors in the framework of perturbative QCD, where the power corrections up to twist-4 of the meson distribution amplitudes and the next-to-leading-order QCD corrections up to subleading power are included. In order to guarantee the gauge invariance of the meson to vacuum matrix element, we take into account both assignments with the lowest Fock state and the high Fock state with an additional valence gluon. Our results confirm the power behaviour of the twist expansion and show the chiral enhancement effect at subleading power in the PQCD approach. We also estimate the SU(3) asymmetry for the kaon and pion form factors and find that it is smaller than 30%. *

show abstract

Pd-Catalyzed Intramolecular Chemoselective C(sp2)–H and C(sp3)–H Activation of N-Alkyl-N-arylanthranilic Acids

Cited by 19 publications

References 49 publications

Z→π+π− , K
Cheng
¹
,
Qin
²

2019
Phys. Rev. D
11
1
8
0
View full text Add to dashboard Cite

Z→π+π− , K
Cheng
¹
,
Qin
²

2019
Phys. Rev. D
11
1
8
0
View full text Add to dashboard Cite

Substrate-Controlled Regiodivergent Synthesis of Fluoroacylated Carbazoles via Friedel–Crafts Acylation

Pion and kaon form factors in the perturbative QCD approach

Contact Info

Product

Resources

About

Pd-Catalyzed Intramolecular Chemoselective C(sp2)–H and C(sp3)–H Activation of N-Alkyl-N-arylanthranilic Acids

Cited by 19 publications

References 49 publications

Z→π+π− , KCheng1, Qin2 2019Phys. Rev. D11180View full textAdd to dashboardCite

Z→π+π− , KCheng1, Qin2 2019Phys. Rev. D11180View full textAdd to dashboardCite

Substrate-Controlled Regiodivergent Synthesis of Fluoroacylated Carbazoles via Friedel–Crafts Acylation

Pion and kaon form factors in the perturbative QCD approach

Contact Info

Product

Resources

About

Z→π+π− , K
Cheng
¹
,
Qin
²

2019
Phys. Rev. D
11
1
8
0
View full text Add to dashboard Cite

Z→π+π− , K
Cheng
¹
,
Qin
²

2019
Phys. Rev. D
11
1
8
0
View full text Add to dashboard Cite