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CAS号163336-50-3 N-(3-methoxy-2-... | CAS号6613-44-1 3,5-二甲基苯甲酰氯 | CAS号55289-06-0 3-甲氧基-2-甲基苯甲酸 | CAS号162752-59-2 N-(3,5-Dimethyl... | CAS号24487-91-0 3-甲氧基-2-甲基苯甲酰氯

3,5-二甲基苯甲酸置于氯化亚砜,Sodium Hydroxide体系中,用 乙酸乙酯 用作溶剂,化学反应生成甲氧虫酰肼
参考文献:6-氯-2-甲氧基甲苯的制备方法及甲氧虫酰肼的合成工艺
标题:6-氯-2-甲氧基甲苯的制备方法及甲氧虫酰肼的合成工艺
摘要:本申请涉及杀虫剂领域,更具体地说,它涉及6‑氯‑2‑甲氧基甲苯的制备方法及甲氧虫酰肼的合成工艺.6‑氯‑2‑甲氧基甲苯的制备方法包括如下步骤:于溶剂中,取2,6‑二氯甲苯与甲醇钠混合,进行取代反应,制得含有3‑氯‑2‑甲基苯酚钠与6‑氯‑2‑甲氧基甲苯的第一反应液;向第一反应液中滴加硫酸二甲酯,进行醚化反应,除去3‑氯‑2‑甲基苯酚钠,得到第二反应液并进行后处理,制得6‑氯‑2‑甲氧基甲苯.甲氧虫酰肼的合成工艺包括如下步骤:以6‑氯‑2‑甲氧基甲苯为中间体,制备得到3‑甲氧基‑2‑甲基苯甲酸;再以3‑甲氧基‑2‑甲基苯甲酸和3,5‑二甲基苯甲酸为中间体,制备得到甲氧虫酰肼.本申请的合成工艺能够显著的提高甲氧虫酰肼的收率与纯度.

专利信息

专利号:US-11926589-B2
优先权日:2019-07-09
标 题 :Process for the synthesis of non-racemic cyclohexenes
发明人：REISMAN SARAH; ROMBOLA MICHAEL; LADD CAROLYN L; MCLAUGHLIN MARTIN JOHN; ZUEND STEPHAN; GOETZ ROLAND
权利人:BASF CORP; CALIFORNIA INST OF TECHN
摘要:This invention relates to a process for the synthesis of a non-racemic cyclohexene compound of formula (I) by a Diels-Alder reaction of a compound of formula (II) with a compound of formula (III) wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 and Y have the meanings as defined in the description in the presence of a catalyst comprising at least one m-valent metal cation M m+ wherein the metal M is selected from Scandium (Sc), Yttrium (Y), Lanthanum (La), Cerium (Ce), Praseodymium (Pr), Neodymium (Nd), Promethium (Pm), Samarium (Sm), Europium (Eu), Gadolinium 15 (Gd), Terbium (Tb), Dysprosium (Dy), Holmium (Ho), Erbium (Er), Thulium (Tm), Ytterbium (Yb), Lutetium (Lu), Gallium (Ga) and Indium (In), and m is an integer of 1, 2 or 3, and a chiral ligand of the formula (IV) wherein R 10a , R 10b , R 10c , R 10d , R 10a′ , R 10b′ , R 10c′ , R 10d′ , Z and Z′ have the meanings as defined in the description.

专利号:US-11866398-B2
优先权日:2018-05-15
标 题:Total synthesis of prostaglandin J natural products by stereoretentive metathesis
发明人：LI JIAMING; CHEN XU; AHMED TONIA S; STOLTZ BRIAN M; GRUBBS ROBERT H
权利人:CALIFORNIA INST OF TECHN
摘要:This invention relates generally to the synthesis of Δ12-Prostaglandin J product using stereoretentive ruthenium olefin metathesis catalysts supported by dithiolate ligands. Δ12-Prostaglandin J products were generated with excellent selectivity (>99% Z) and in moderate to high/good yields (47% to 80% yield; 58% to 80% yield).

专利号:US-10995049-B2
优先权日:2019-07-19
标 题 :Total synthesis of prostaglandin J natural products and their intermediates
发明人：LI JIAMING; XU CHEN; AHMED TONIA S; GRUBBS ROBERT H; STOLTZ BRIAN M
权利人:CALIFORNIA INST OF TECHN
摘要:The present disclosure is directed to methods of preparing prostaglandin J natural products by stereoretentive metatheses reactions and intermediates used in the synthesis of these natural products, including the use of intermediates of Formula (I-A), where R 1 is defined in the specification

专利号:US-8193384-B2
优先权日:2005-07-29
标 题 :Polymer-bound phosphitylating reagents for the synthesis of organophosphorus compounds
发明人：PARANG KEYKAVOUS; AHAMDIBENI YOUSEF
权利人:PARANG KEYKAVOUS; AHAMDIBENI YOUSEF; RHODE ISLAND EDUCATION
摘要:The synthesis and biochemical utility of modified oligonucleotides containing diphosphodiester internucleotide linkages. The synthesis of these compounds was carried out using diphosphitylating reagents. Oligonucleotides containing diphosphate diester bridges wherein said oligonucleotides are synthesized via a solid-phase synthesis strategy to form modified oligonucleotides. Diphosphitylating, triphosphitylating, tetraphosphitylating, β-triphosphitylating, bifunctional diphosphitylating, bifunctional triphosphitylating, and bifunctional tetraphosphitylating reagents wherein, the phosphorus atoms are linked together through oxygen, sulfur, amino, or methylene groups and/or are substituted with chlorine, diisopropylamine and cyanoethoxy groups.

专利号:US-11807617-B2
优先权日:2017-05-08
标题 :Highly efficient synthesis of Z-macrocycles using stereoretentive, ruthenium-based metathesis catalysts
发明人：AHMED TONIA S; GRUBBS ROBERT H
权利人:CALIFORNIA INST OF TECHN
摘要:A highly efficient, Z-selective ring-closing metathesis system for the formation of macrocycles using a stereoretentive, ruthenium-based catalyst supported by a dithiolate ligand is reported. This catalyst is demonstrated to be remarkably active as observed in initiation experiments showing complete catalyst initiation at −20° C. within 10 min. Using easily accessible diene starting materials bearing a Z-olefin moiety, macrocyclization reactions generated products with significantly higher Z-selectivity in appreciably shorter reaction times, in higher yield, and with much lower catalyst loadings than in previously reported systems. Macrocyclic lactones ranging in size from twelve-membered to seventeen-membered rings are synthesized in moderate to high yields (68-79% yield) with excellent Z-selectivity (95%-99% Z).

专利号:US-10829792-B2
优先权日:2017-03-21
标 题 :Biocatalytic synthesis of strained carbocycles
发明人：CHEN KAI; HUANG XIONGYI; KAN S B JENNIFER
权利人:CALIFORNIA INST OF TECHN
摘要:Provided herein are methods for producing products containing strained carbocycles, such as cyclopropene moieties and/or bicyclobutane moieties. The methods include combining an alkyne and a carbene precursor in the presence of a heme protein, e.g., a cytochrome P450, under conditions sufficient to form the strained carbocycle. Reaction mixtures for producing strained carbocycles are also described, as well as whole-cell catalysts comprising heme proteins and variants thereof for forming cyclopropenes, bicyclobutanes, and related products.