微波辅助合成2-芳基-2-恶唑啉,5,6-二氢-4 H -1,3-恶嗪和4,5,6,7-四氢-1,3-恶氮杂s
摘要:
提出了通过微波辅助多磷酸(PPA)酯促进的ω-氨基醇的环化反应合成5至7元环亚氨基醚的第一个通用程序。使用聚磷酸乙酯/ CHCl 3有效地制备了2-芳基-2-恶唑啉和5,6-二氢-4 H -1,3-恶嗪。在无溶剂条件下,多磷酸三甲基甲硅烷基酯可合成迄今未报道的4,5,6,7-四氢-1,3-氧杂氮杂pine。该方法具有良好的收率和优异的收率,并且反应时间短。在手性底物中研究了PPA酯的反应机理和作用。
微波辅助合成2-芳基-2-恶唑啉,5,6-二氢-4 H -1,3-恶嗪和4,5,6,7-四氢-1,3-恶氮杂s
摘要:
提出了通过微波辅助多磷酸(PPA)酯促进的ω-氨基醇的环化反应合成5至7元环亚氨基醚的第一个通用程序。使用聚磷酸乙酯/ CHCl 3有效地制备了2-芳基-2-恶唑啉和5,6-二氢-4 H -1,3-恶嗪。在无溶剂条件下,多磷酸三甲基甲硅烷基酯可合成迄今未报道的4,5,6,7-四氢-1,3-氧杂氮杂pine。该方法具有良好的收率和优异的收率,并且反应时间短。在手性底物中研究了PPA酯的反应机理和作用。
PIPERAZINE HETEROARYL DERIVATIVE, PREPARATION METHOD THEREFOR AND USE OF SAME IN MEDICINE
申请人:JIANGSU HENGRUI MEDICINE CO., LTD.
公开号:US20200157111A1
公开(公告)日:2020-05-21
The present invention relates to a piperazine heteroaryl derivative, a preparation method therefor and the use of same in medicine. In particular, the present invention relates to the piperazine heteroaryl derivative as shown in the general formula (I), a preparation method therefor, a pharmaceutical composition comprising the derivative, and the use of same as a capsid protein inhibitor, in particular in the prevention and/or treatment of diseases such as hepatitis B, influenza, herpes, AIDS, etc. The definitions of each group in the general formula (I) are the same as those defined in the description.
<i>C</i>
‐Propargylation Overrides
<i>O</i>
‐Propargylation in Reactions of Propargyl Chloride with Primary Alcohols: Rhodium‐Catalyzed Transfer Hydrogenation
作者:Tao Liang、Sang Kook Woo、Michael J. Krische
DOI:10.1002/anie.201603575
日期:2016.8
The canonical SN2 behavior displayed by alcohols and activated alkyl halides in basic media (O‐alkylation) is superseded by a pathway leading to carbinol C‐alkylation under the conditions of rhodium‐catalyzed transfer hydrogenation. Racemic and asymmetric propargylations are described.
在铑催化的转移加氢条件下,醇和活化的烷基卤化物在碱性介质(O-烷基化)中表现出的标准S N 2行为被导致甲醇C-烷基化的途径所取代。描述了外消旋和不对称的炔丙基化。
Piperazine heteroaryl derivative, preparation method therefor and use of same in medicine
申请人:JIANGSU HENGRUI MEDICINE CO., LTD.
公开号:US11247998B2
公开(公告)日:2022-02-15
The present invention relates to a piperazine heteroaryl derivative, a preparation method therefor and the use of same in medicine. In particular, the present invention relates to the piperazine heteroaryl derivative as shown in the general formula (I), a preparation method therefor, a pharmaceutical composition comprising the derivative, and the use of same as a capsid protein inhibitor, in particular in the prevention and/or treatment of diseases such as hepatitis B, influenza, herpes, AIDS, etc. The definitions of each group in the general formula (I) are the same as those defined in the description.
Microwave-Assisted Synthesis of 2-Aryl-2-oxazolines, 5,6-Dihydro-4<i>H</i>-1,3-oxazines, and 4,5,6,7-Tetrahydro-1,3-oxazepines
作者:María C. Mollo、Liliana R. Orelli
DOI:10.1021/acs.orglett.6b03122
日期:2016.12.2
general procedure for the synthesis of 5- to 7-membered cyclic iminoethers by microwave-assisted cyclization of ω-amido alcohols promoted by polyphosphoric acid (PPA) esters is presented. 2-Aryl-2-oxazolines and 5,6-dihydro-4H-1,3-oxazines were efficiently prepared using ethyl polyphosphate/CHCl3. Trimethylsilyl polyphosphate in solvent-free conditions allowed for the synthesis of hitherto-unreported
提出了通过微波辅助多磷酸(PPA)酯促进的ω-氨基醇的环化反应合成5至7元环亚氨基醚的第一个通用程序。使用聚磷酸乙酯/ CHCl 3有效地制备了2-芳基-2-恶唑啉和5,6-二氢-4 H -1,3-恶嗪。在无溶剂条件下,多磷酸三甲基甲硅烷基酯可合成迄今未报道的4,5,6,7-四氢-1,3-氧杂氮杂pine。该方法具有良好的收率和优异的收率,并且反应时间短。在手性底物中研究了PPA酯的反应机理和作用。