<i>N</i>-TFA-Gly-Bt-Based Stereoselective Synthesis of Substituted 3-Amino Tetrahydro-2<i>H</i>-pyran-2-ones via an Organocatalyzed Cascade Process
作者:Liuqing Han、Ke Li、Haitong Xu、Tao Mei、Yali Sun、Jingping Qu、Yuming Song
DOI:10.1021/acs.joc.9b01488
日期:2019.8.16
excellent enantioselectivities (up to 99% ee) via an organo-catalyzed cascade procedure with N-TFA-Gly-Bt and α,β-unsaturated aldehydes as the substrates. The corresponding tetrahydro-2H-pyran-2-ones can be used for further synthetic transformations that furnish chiral-substituted 3-aminopiperidin-2-ones with high levels of stereoselectivity.
MOLECULES HAVEING PESTICIDAL UTILIY AND INTERMEDIATES, COMPOSITIONS AND PROCESSES RELATED THERETO
申请人:Dow AgroSciences LLC
公开号:US20180098541A1
公开(公告)日:2018-04-12
This disclosure relates to the field of molecules having pesticidal utility against pests in Phyla Arthropoda, Mollusca, and Nematoda, processes to produce such molecules, intermediates used in such processes, pesticidal compositions containing such molecules, and processes of using such pesticidal compositions against such pests. These pesticidal compositions may be used, for example, as acaricides, insecticides, miticides, molluscicides, and nematicides. This document discloses molecules having the following formula (“Formula One”).
<i>N</i>-Heterocyclic Carbene Catalyzed Sulfenylation of α,β-Unsaturated Aldehydes
作者:Yu-Ting Dong、Quan Jin、Ling Zhou、Jie Chen
DOI:10.1021/acs.orglett.6b02939
日期:2016.11.4
An efficient N-heterocyclic carbene (NHC) catalyzed sulfenylation reaction of α,β-unsaturatedaldehydes with N-(arylthio)phthalimide has been developed. A wide variety of α-thioenals can be obtained with good to excellent yields and excellent Z-configuration.
An efficient one-pot method for the syntheses of di- and polybrominated estersfrom readily available aldehydes is reported. The direct use of the in situ generated byproduct PPh3O in the following reactions greatly improves the efficiency of the cascade. Also, the substrate scope of the reaction is proved to be broad.
[EN] MOLECULES HAVING PESTICIDAL UTILITY, AND INTERMEDIATES, COMPOSITIONS, AND PROCESSES, RELATED THERETO<br/>[FR] MOLÉCULES PRÉSENTANT UNE UTILITÉ EN TANT QUE PESTICIDES, AINSI QU'INTERMÉDIAIRES, COMPOSITIONS, ET PROCÉDÉS ASSOCIÉS
申请人:DOW AGROSCIENCES LLC
公开号:WO2016168059A1
公开(公告)日:2016-10-20
This disclosure relates to the field of moiecuies having pesticida i utility against pests in Phyla Arthropoda, Moliusca, and hJematoda, processes to produce such moiecuies, intermediates used In such processes, pesticidai compositions containing such molecules, and processes of using such pesticidai compositions against such pests. These pesticidai compositions may be used, for example, as acaricldes, insecticides, miticides, moilusclcides, and nematicides. This document discloses moiecuies having the following formula ("Formula One").