A pyridazine compound of the formula:
has an excellent plant disease controlling effect.
式中的哒嗪化合物:
具有极佳的植物病害控制效果。
Utilizing acetyl hypofluorite for chlorination, bromination, and etherification of the pyridine system
作者:David Hebel、Shlomo Rozen
DOI:10.1021/jo00022a016
日期:1991.10
Acetyl hypofluorite, which is easily made from F2, possesses a strong electrophilic fluorine. This electrophile is able to attach itself to the nitrogen atom of pyridine and activate the ring toward nucleophilic attacks. The ultimate elimination of HF results in an overall easy nucleophilic displacement of the hydrogen of the important 2-position. The nucleophiles used; Cl-delta-, Br-delta-, and RO-delta-, originate from solvents such as CH2Cl2, CH2Br2, and various primary alcohols. Thus, 2-halo- or 2-alkoxypyridines were formed. The reaction conditions (room temperature, very short reaction times, and good yields) transform the task of direct substitution of the pyridine ring from an extremely difficult to a very easy procedure.
1,4-OXAZEPANE DERIVATIVES
申请人:Takeda Pharmaceutical Company Limited
公开号:EP2625170A1
公开(公告)日:2013-08-14
TRIAZOLO-PYRIMIDINE COMPOUNDS AND USES THEREOF
申请人:DIZAL (JIANGSU) PHARMACEUTICAL CO., LTD
公开号:EP3849983A1
公开(公告)日:2021-07-21
[EN] 1,4-OXAZEPANE DERIVATIVES<br/>[FR] DÉRIVÉS DE 1,4-OXAZÉPANE
申请人:TAKEDA PHARMACEUTICAL
公开号:WO2012046882A1
公开(公告)日:2012-04-12
Provided is a compound having a monoamine reuptake inhibitory activity, which is represented by the formula (I) wherein ring A is an optionally substituted 6-membered aromatic ring, ring B is the substituents on ring A are optionally bonded to form, together with ring A, an optionally substituted 9- or 10-membered aromatic fused ring, and other symbols are as defined in the specification, or a salt thereof.