CAS: 19666-30-9; Oxadiazon

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CAS号6851-40-7 2,4-dichloro-1-... | CAS号51167-18-1 2'-[2,4-dichlor... | CAS号56578-26-8 1-(2,4-dichloro...

1-(2,4-Dichloro-5-Isopropoxyphenyl)-1-(Methoxycarbonyl)-1,2-Trimethylacetyl Hydrazine置于sodium Methylate体系中,化学反应 6.0H,以98.1%的收率获得恶草酮
参考文献:一种噁草酮的合成工艺
标题:一种噁草酮的合成工艺
摘要:本发明公开了一种噁草酮的合成工艺,包括以下步骤:A)将2,4‑二氯‑5‑异丙氧基苯酰肼与氯甲酸甲酯在有机溶剂中反应,得到酰肼甲酯;B)将所述酰肼甲酯在催化剂的作用下进行环合反应,得到噁草酮.在合成噁草酮的过程中,本申请以2,4‑二氯‑5‑异丙氧基苯酰肼与氯甲酸甲酯为原料,其中氯甲酸甲酯代替光气或三光气作为羰基化关环试剂,合成噁草酮,避免了传统光气工艺中的安全隐患,从而使本申请提供的噁草酮的合成工艺安全性较高,并且本发明噁草酮的收率较高,实验结果表明,噁草酮的收率为97%以上.

专利信息

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-4138404-A
优先权日:1973-03-22
标题:Process for the preparation of oxadiazolines
发明人：FORT JEAN F; GIRAUDON RAYMOND
权利人:RHONE POULENC SA
摘要:Oxadiazoline derivatives of the formula: ##STR1## WHEREIN R is alkyl of 1 through 4 carbon atoms, which are useful as intermediates in the synthesis of oxadiazoline derivatives of the formula: ##STR2## WHEREIN R is as defined above the R 1 is alkyl of 1 through 4 carbon atoms, possessing useful herbicidal properties, are prepared by a new process which comprises reducing the nitro group in a 5-alkyl-3-(2-nitro-4-chlorophenyl)-1,3,4-oxadiazolin-2-one of the formula: ##STR3## wherein R is as defined above to a hydroxylamino group, treating the resulting 5-alkyl-3-(2-hydroxylamino-4-chlorophenyl)-1,3,4-oxadiazolin-2-one with concentrated sulphuric acid of density about 1.83 to produce the corresponding amino-phenol, and converting the amine group in the resulting 5-alkyl-3-(2-amino-4-chloro-5-hydroxyphenyl)-1,3,4-oxadiazolin-2-one to a chlorine atom. The 5-alkyl-3-(2-hydroxylamino-4-chlorophenyl)-1,3,4-oxadiazolin-2-one intermediates are new compounds.

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.

专利号:US-2021386068-A1
优先权日:2018-11-07
标题 :Compositions comprising pyridine carboxylate herbicides and very long chain fatty acid (vlcfa) synthesis inhibitor herbicides
发明人：KISTER JEREMY; SATCHIVI NORBERT M
权利人:CORTEVA AGRISCIENCE LLC
摘要:Disclosed herein are compositions comprising (a) a pyridine carboxylate herbicide or an agriculturally acceptable N-oxide, salt, or ester thereof and (b) a VLCFA synthesis inhibitor herbicide. Also disclosed herein are methods of controlling undesirable vegetation, comprising applying to vegetation or an area adjacent the vegetation or applying in soil or water to control the emergence or growth of vegetation (a) a pyridine carboxylate herbicide or an agriculturally acceptable N-oxide, salt, or ester thereof, and (b) a VLCFA synthesis inhibitor herbicide.