CAS: 104206-82-8; Mesotrione

相似化合物

110964-79-9 1671-49-4 849035-66-1

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CAS号226944-49-6 3-(2-nitro-4-me... | CAS号288-88-0 1,2,4-三氮唑

2-硝基-4-甲砜基氯苯置于氯化亚砜,Benzyl Triethylammonium Azide,三乙胺,Sodium Hydroxide体系中,用 二甲基亚砜,甲苯 用作溶剂,化学反应 3.0H,反应生成甲基磺草酮
参考文献:一种三酮类化合物及其中间体的制备方法
标题:一种三酮类化合物及其中间体的制备方法
摘要:本发明公开了一种三酮类化合物及其中间体的制备方法.该方法包括:以化合物(i)为原料,在碱的作用下,与化合物(II)发生亲核取代反应,再经氧化反应得到化合物(III),化合物(III)再经酰氯化,酯化,重排,得到三酮类目标产物.本发明的有益效果主要体现在:反应条件温和,工艺简单,收率高,产品质量好,并且生产成本低,三废少,利于工业化生产.

专利信息

专利号:US-11008285-B2
优先权日:2017-03-27
标 题 :Process for synthesis of mesotrione
发明人：GHARDA KEKI HORMUSJI; MATHUR SUCHET SARAN; JAIN NANDKUMAR JANARDAN; SATHE SHEKHAR VISHWANATH; DAMANIA PRAGNESH DALPATRAM
权利人:GHARDA CHEMICALS LTD
摘要:The present disclosure relates to a process for synthesis of mesotrione. The process comprises reacting 4-toluene sulfonyl chloride with alkali metal sulphite and alkali metal bicarbonate to obtain alkali metal toluene-4-sulfinate. The alkali metal toluene-4-sulfinate is reacted with alkali metal salt of monochloroacetic acid to obtain 4-methylsulfonyl toluene. Further, 4-methylsulfonyl toluene is nitrated to obtain 2-nitro-4-methylsulfonyl toluene. 2-nitro-4-methylsulfonyl toluene is oxidized and then halogenated to obtain 2-nitro-4-methylsulfonylbenzoyl halide. 2-nitro-4-methylsulfonylbenzoyl halide is reacted with alkali metal salt of 1,3-cyclohexanedione to obtain 3-(2-Nitro-4-methylsulfonylbenzoyloxy)cyclohexen-1-one which is reacted with base, a third fluid medium and cyanide ion source to obtain an amorphous mesotrione. The present disclosure also discloses the steps of converting the amorphous mesotrione to crystalline mesotrione having purity greater than 99%. The process of the present disclosure for preparing mesotrione is rapid, economic, and environment friendly.

专利号:US-2023303487-A1
优先权日:2020-07-31
标 题 :Process for preparation of mesotrione and its intermediates
发明人：PANIRAJ A S; KUMAR SURESH D; S V R ADITHYA
权利人:RALLIS INDIA LTD
摘要:The present disclosure provides a new and improved process for preparation of intermediate compounds and synthesis of mesotrione therefrom. The present disclosure provides an economical, efficient and eco-friendly process for preparation of mesotrione.

专利号:WO-2024256370-A1
优先权日:2023-06-13
标 题 :Synthesis of glufosinate using an amidase-based process
发明人：ZIMMERMANN GUNTHER; POTT MORITZ STEFAN
权利人:BASF SE
摘要:The present invention relates to a method of preparing glufosinate, comprising the steps of hydrolysing an N-carbamoyl glufosinate amide with an Amidase enzyme to form an N- carbamoyl amino acid compound followed by cleaving off the carbamoyl moiety of said N- carbamoyl amino acid compound.

专利号:US-2025120400-A1
优先权日:2021-12-10
标题:Synthesis of glufosinate using a hydantoinase-based process
发明人：DITRICH KLAUS; BREUER MICHAEL; POTT MORITZ STEFAN; ZIMMERMANN GUNTHER; SEEMAYER STEFAN
权利人:BASF SE
摘要:The present invention relates to a method of manufacturing glufosinate, comprising the steps of hydrolysing a hydantoin with a Hydantoinase enzyme to form a N-carbamoyl amino acid compound followed by cleaving off the carbamoyl moiety of said N-carbamoyl amino acid compound.

专利号:WO-2021143617-A1
优先权日:2020-01-16
标题 :Cyclohexadiene oxime ether compound, synthesis method therefor and application thereof
发明人：DENG ZHAOXI; Hu Hewei; GUO SHAOXIONG; CEN JIN; TAN BIN; DU BINGBING; YANG LINA; LI JUNPEI
权利人:ZHENGZHOU INSTITUTE OF CHIRAL DRUGS RES CO LTD
摘要:The present invention provides a cyclohexadiene oxime ether compound having the following structural formula: (I) or (II) or (III); group R 1 and group R 3 are each selected from -H, an aliphatic substituent containing 1-6 carbon atoms, a halogenated aliphatic substituent, a cyano-substituted aliphatic substituent, amino or amide, phenyl, and a halogenated aromatic substituent or a cyano-substituted aromatic substituent; group R 2 is selected from -H, an aliphatic substituent containing 1-6 carbon atoms, a halogenated aliphatic substituent, a cyano-substituted aliphatic substituent, amino or amide, phenyl, a halogenated aromatic substituent, and a cyano-substituted aromatic substituent, a nitro-substituted aromatic substituent or a heterocyclic aromatic substituent; and the heterocyclic aromatic substituent is selected from (iv), (v) or (vi), wherein X is selected from -H, halogen, -CN, -NO 2 , and -CF 3 , -C(CF 3 ) 3 , and n is the number of substituents and is selected from 1, 2, and 3. The present invention also provides a preparation method for the above-mentioned cyclohexadiene oxime ether compound and an application thereof.

专利号:US-11919928-B2
优先权日:2016-03-16
标题 :Method for producing dihydrotentoxin
发明人：KUBO TAKASHI; MACHIDA MASAYUKI; FUJIOKA TOMONORI; YAMAGUCHI Shigenari; KAWAI KIYOSHI
权利人:KUMIAI CHEMICAL INDUSTRY CO
摘要:An object of the present invention is to identify an enzyme having activity of synthesizing dihydrotentoxin that is a tentoxin precursor and an enzyme having activity of synthesizing tentoxin using dihydrotentoxin as a substrate. The present invention concerns a tentoxin synthesis-related gene encoding a protein comprising the amino acid sequence of SEQ ID NO: 16 and having activity of nonribosomal peptide synthesis of dihydrotentoxin and a tentoxin synthesis-related gene encoding a protein comprising the amino acid sequence of SEQ ID NO: 18 and having activity of converting dihydrotentoxin to tentoxin.