CAS: 120-47-8; Ethyl 4-Hydroxybenzoate

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123-08-0 623-05-2 99-96-7

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茴香酸乙酯置于2-二乙氨基乙硫醇盐酸盐,Sodium T-Butanolate体系中,用 N,N-二甲基甲酰胺 用作溶剂,化学反应 1.0H,以69%的收率获得过氧化氢酶
参考文献:2-(二乙氨基)乙硫醇,一种无臭的芳香甲基醚脱保护新试剂
标题:2-(二乙氨基)乙硫醇,一种无臭的芳香甲基醚脱保护新试剂
摘要:报道了一种用于芳族甲基醚的脱保护的新试剂2-(二乙基氨基)乙硫醇.这种化合物以其hcl盐的形式商购可得,可在多种底物上以高至极好的收率提供相应的酚.与使用更常见的硫醇(如乙硫醇)相比,此方法的明显优势在于,通过用稀酸淬灭,可以轻松地将脱保护剂和副产物2-(二乙氨基)乙基甲基硫化物萃取到水相中,从而实现基本上无味的处理.
Doi:10.1021/jo0611059

专利信息

专利号:US-7355036-B2
优先权日:2001-07-03
标 题 :Two-stage protective groups for the synthesis of biopolymers
发明人：GUEIMIL RAMON; SCHEFFLER MATTHIAS; STAEHLER PEER F; BEIJER BARBRO
权利人:FEBIT AG
摘要:The invention relates to a method for the synthesis of a nucleic acid by gradual breakdown from protected synthesis building blocks carrying two-stage protective groups. The two-stage protective groups are split by means of a first exposure step and a subsequent chemical treatment step

专利号:US-5512701-A
优先权日:1995-06-07
标题:Process for the synthesis of vinyl sulfenic acid derivatives
发明人：HOARD DAVID W; LUKE WAYNE D
权利人:LILLY CO ELI
摘要:The present invention is directed to a new process for the synthesis of vinyl sulfenic acid derivatives. These compounds are useful for the synthesis of benzo[b]thiophenes, in particular 2-aryl-benzo[b]thiophenes.

专利号:US-10768157-B2
优先权日:2015-10-20
标 题:Materials and methods for the detection of trace amounts of substances in biological and environmental samples
发明人：KABIR ABUZAR; FURTON KENNETH G
权利人:KABIR ABUZAR; FURTON KENNETH G; THE FLORIDA INTERNATIONAL UNIV BOARD OF TRUSTEES
摘要:The subject invention provides chemical compositions and synthesis strategies to create molecularly imprinted polymers (MIPs) via sol-gel processes. In a specific embodiment, the subject invention utilizes a(n) organic, inorganic, or metallic template analyte to create a hybrid organic-inorganic or inorganic three-dimensional network possessing cavities complementary to the shape, size, and functional orientation of the template molecule or ions. The subject invention further pertains to the use of the novel MIPs as selective solid phase extraction (SPE) sorbents for pre-concentration and clean-up of trace substances in biological and environmental samples. Synthesis of other molecularly imprinted polymers with environmental, pharmaceutical, chemical, clinical, toxicological, and national security implications can be conducted in accordance with the teachings of the subject invention.

专利号:EP-2173892-B8
优先权日:2007-07-27
标题:Process for the preparation of immobilised recombinant Penicillin Acylase biocatalyst from Achromobacter sp CCM 4824 expressed in E. coli BL21 CCM 7394 and its use for the synthesis of beta-lactam antiobiotics
发明人：DATLA ANUPAMA; RAJASEKAR VYASARAYANI WILLIAMS; KYSLIK PAVEL; BECKA STANISLAV; KRISHNAKANT ASHAR TRUPTI; YOGESH ZAMBRE SUJATA; NIKUNJ KUMAR
权利人:FERMENTA BIOTECH LTD
摘要:The present invention discloses isolation of Penicillin Acylase (PA) from Achromobacter sp CCM 4824 expressed in recombinant strain E. coli BL21 CCM 7394 bearing the recombinant plasmid pKXIP1 and processing of PA into biocatalyst useful for the industrial synthesis of antibiotics. More particularly the invention discloses a synthesis of semi-synthetic β-lactam antibiotics in the reaction mixture consisting of activated acyl-donor (D-p-hydroxyphenylglycine methyl ester or amide for Amoxicillin and Cefadroxil; D-phenylglycine methyl ester or amide for Ampicillin and Cephalexin) and nucleophile (6-APA or 7-ADCA) catalyzed by PA obtained from recombinant E. coli BL21 CCM 7394 as the biocatalyst.

专利号:US-12221452-B2
优先权日:2017-10-04
标题:Synthesis of cantharidin
发明人：DAVIDSON MATTHEW GENE; EKLOV BRIAN MATTHEW; WUTS PETER; LOERTSCHER BRAD MELVIN; SCHOW STEVEN R
权利人:VERRICA PHARMACEUTICALS INC
摘要:The invention provides synthetic methods for the preparation of cantharidin and analogs thereof. In one aspect, the invention provides an improved Diels-Alder cycloaddition to generate a key intermediate en route to cantharidin and analogs thereof. In certain embodiments, the new Diels-Alder reaction involves reacting Compound (2) in the presence of furan, and in the absence of acid or increased pressure, in an aprotic polar solvent with slight warming, to yield Compound (1) in favorable yield and exo-endo ratio. In another aspect, the invention also provides a new Diels-Alder reaction between compounds of Formula (III) and furan to yield compounds of Formula (IV), which can then be transformed into cantharidin or analogs thereof. In yet another aspect, the invention describes a new palladium-mediated carbonylation providing another key intermediate en route to cantharidin and analogs thereof. In addition to synthetic methods, present invention also provides compounds (i.e., intermediates) useful in the synthesis of cantharidin and analogs thereof. Compounds provided herein may have biological activity, and therefore may be used in the treatment of diseases or conditions (e.g., infectious diseases and skin conditions).

专利号:US-6372945-B1
优先权日:1995-06-07
标 题 :Process for the synthesis of vinyl sulfoxides
发明人：AIKINS JAMES A; MILLER RANDAL SCOT; ZHANG TONY Y
权利人:LILLY CO ELI
摘要:The present invention is directed to a new process for the synthesis of vinyl sulfoxides, in particular diarylvinyl sulfoxides