Analyzing Site Selectivity in Rh<sub>2</sub>(esp)<sub>2</sub>-Catalyzed Intermolecular C–H Amination Reactions
作者:Elizabeth N. Bess、Ryan J. DeLuca、Daniel J. Tindall、Martins S. Oderinde、Jennifer L. Roizen、J. Du Bois、Matthew S. Sigman
DOI:10.1021/ja5015508
日期:2014.4.16
Predicting site selectivity in C–H bond oxidation reactions involving heteroatom transfer is challenged by the small energetic differences between disparate bond types and the subtle interplay of steric and electronic effects that influence reactivity. Herein, the factorsgoverningselective Rh2(esp)2-catalyzed C–H amination of isoamylbenzene derivatives are investigated, where modification to both
Copper-Catalyzed Decarboxylative C(sp<sup>2</sup>
)-C(sp<sup>3</sup>
) and C(sp)-C(sp<sup>3</sup>
) Coupling of Substituted Cinnamic Acids and 3-Phenyl Propiolic Acid with N-Tosyl Oxaziridines
作者:Bich-Ngoc Nguyen、Hai-Thuong Cao
DOI:10.1002/ejoc.201900982
日期:2019.9.15
We describe the copper‐catalyzed decarboxylative alkylation of substituted cinnamic acids using N‐Tosyl oxaziridines with high yields and excellent stereoselectivities. The (E)‐alkene was achieved as the sole isomer in a single step. Our protocol also gives an efficient approach for the construction of alkyl phenyl acetylenes without oxidants and bases. Initial investigation suggested a radical process
a-ASARY-LALDEHYDE ESTER, PREPARATION METHOD THEREFOR, AND APPLICATION THEREOF
申请人:NORTHWEST UNIVERSITY
公开号:US20170260122A1
公开(公告)日:2017-09-14
The present invention relates to α-asary-laldehyde ester, a preparation method therefor, and an application thereof. The chemical structure of the related α-asary-laldehyde ester is represented by formula I. A related application is an application of the compound in preparation of drugs for calming, mind tranquillizing, senile dementia resisting, convulsion resisting, epilepsy resisting and depression resisting.
Substituted Fused Pyrimidinones and Dihydropyrimidinones
申请人:FRACKENPOHL Jens
公开号:US20120157306A1
公开(公告)日:2012-06-21
The use of substituted fused pyrimidinones and dihydropyrimidinones of the formula (I) or salts thereof
where the radicals of the formula (I) are each as defined in the description, for enhancing stress tolerance in plants to abiotic stress, and for invigorating plant growth and/or for increasing plant yield.
SUBSTITUTED FUSED PYRIMIDINONES AND DIHYDROPYRIMIDINONES
申请人:BAYER INTELLECTUAL PROPERTY GMBH
公开号:US20150173359A1
公开(公告)日:2015-06-25
The use of substituted fused pyrimidinones and dihydropyrimidinones of the formula (I) or salts thereof
where the radicals of the formula (I) are each as defined in the description, for enhancing stress tolerance in plants to abiotic stress, and for invigorating plant growth and/or for increasing plant yield.