CAS: 20357-25-9; 4,5-Dimethoxy-2-Nitrobenzaldehyde

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CAS号120-14-9 藜芦醛； 3,4-二甲氧基苯甲醛 | CAS号1016-58-6 4,5-二甲氧基-2-硝基苯甲醇 | CAS号2454-72-0 4-羟基-5-甲氧基-2-硝基苯甲醛 | CAS号77376-02-4 acetic acid 4,5... | CAS号121-33-5 香草醛 | CAS号2426-87-1 4-苄氧基-3-甲氧基苯甲醛 | CAS号74-88-4 碘甲烷 | CAS号107044-98-4 N-[(4,5-dimetho... | CAS号53413-67-5 4,5-二甲氧基-2-硝基溴苄 | CAS号22608-87-3 2-氨基-4,5-二甲氧基苯甲醛 | CAS号22608-86-2 N-(2-FORMYL-4,5... | CAS号21203-88-3 diethyl 4-(4,5-... | CAS号18505-71-0 1-(4,5-dimethox... | CAS号29568-78-3 4,5-dimethoxy-2... | CAS号28059-24-7 5,6-二甲氧基吲哚-2-甲酸甲酯 | CAS号1899-48-5 2,4-二氨基喹唑啉 | CAS号20567-38-8 4,5-二甲氧基-2-硝基肉桂酸

3,4-二甲氧基苯甲醛置于水,硝酸体系中,化学反应生成6-硝基藜芦醛
参考文献:气相和溶剂中 2-和 4-硫尿嘧啶的互变异构平衡:密度泛函研究
标题:气相和溶剂中 2-和 4-硫尿嘧啶的互变异构平衡:密度泛函研究
摘要:气相和水溶液中 2-和 4-硫尿嘧啶的五种有利互变异构体的相对稳定性通过密度泛函理论采用 Becke,Lee,Yang 和 Parr (B3Lyp) 交换相关势和三个 6-31G(D,P),6-311++g(D,P) 和三 Zeta 价 (Tzvp) 基组.还计算了零点振动校正.通过可极化连续介质模型在自洽反应场方法的框架内研究了本体溶剂效应.所有计算表明,两种物质在气相和溶液中最稳定的互变异构体都具有氧代硫酮形式,这与之前的从头计算和实验研究完全一致.在水溶液中获得的互变异构稳定性顺序明显不同于在气相中的互变异构稳定性顺序.在 B3Lyp/6-311++g(D,P) 在气相中,2-和 4-硫尿嘧啶互变异构体的稳定性顺序分别为:S2U1>S2U2>S2U4>S2U5>S2U3 和 S4U1>S4U2>S4U3>S4U4>S4U5.水相中相应的趋势是s2U1>S2U3>S2U2>S2U
Doi:10.1002/1097-461X(2001)82:1<44::Aid-Qua1020>3.0.Co;2-6

专利信息

专利号:US-10501782-B1
优先权日:2014-09-05
标题:Cell-free synthesis of DNA by strand displacement
发明人：PORTER NEIL; ROTHWELL PAUL; EXTANCE JONATHAN
权利人:TOUCHLIGHT IP LTD
摘要:The present invention relates to an improved process for synthesis of DNA, RNA, proteins and like molecules, in particular cell-free enzymatic synthesis of DNA, preferably in large scale. The present invention relates to the synthesis of DNA using strand-displacement replication and the addition of nucleotides to the reaction mixture is controlled, thus controlling yield. The reaction mixture contains a starting amount of nucleotides, polymerase and DNA template, to which further nucleotides are supplied in a controlled manner.

专利号:EP-1383732-B1
优先权日:2001-05-04
标题:Labelling reagents, method for synthesis of said reagents and methods for detecting biological molecules
发明人：BOURGET CECILE; LHOMME JEAN; LAAYOUN ALI; KOTERA MITSUHARU; TREVISIOL EMMANUELLE; MENOU LIONEL; BERNAL MENDEZ ELOY
权利人:BIO MERIEUX; UNIV GRENOBLE 1; CENTRE NAT RECH SCIENT
摘要:The invention concerns a temperature-stable labelling reagent of formula (I), wherein: R<1> represents H or an alkyl, aryl or substituted aryl group; R<2> represents a detectable marker or at least two detectable markers linked together by at least a multimeric structure; L is a linking arm comprising a linear catemer concatenation of at least two covalent bonds; and n is an integer equal to 0 or 1; R<3> and R<4> represent, independently of each other: H, NO2, Cl, Br, F, I, R<2>-(L)n-Y-X-, OR, SR, NR2, R, NHCOR, CONHR, COOR with R = alkyl or aryl, A is a linking arm comprising at least a double bond enabling the conjugation of the diazo function with the aromatic cycle; and u is a whole number between 0 and 2, preferably between 0 and 1; and -Y-X- represents -CONH-, -NHCO-, -CH2O-, -CH2S-. The invention also concerns a method for the synthesis of said markers and uses for labelling biological molecules, in particular nucleic acids, with a labelling reagent bearing the diazomethyl function. The invention is particularly applicable in the field of diagnosis.

专利号:US-4582903-A
优先权日:1984-08-17
标 题 :Synthesis of unsaturated hydantoins with an inexpensive catalyst
发明人：MIRVISS STANLEY B
权利人:STAUFFER CHEMICAL CO
摘要:Alkylidene or arylidene substituted hydantoins are produced by condensation of an aromatic or aliphatic aldehyde with hydantoin in the presence of at least one basic salt of an inorganic acid. The desired products are obtained in high yields.

专利号:US-7301049-B2
优先权日:2001-06-21
标 题:Photolabile esters and their uses
发明人：SERAFINOWSKI PAWEL JERZY; GARLAND PETER BRYAN
权利人:CANCER RES INST
摘要:Compounds which are capable of generating acid on photolysis are disclosed, and the uses of these compounds, especially for deprotecting the termini of nucleic acid molecules or peptides during synthesis of arrays. The compounds described herein may be employed in the detritylation of 5′-O-dimethoxytrityl (DMT) protected nucleotides by photolysing the compounds to generate an acid capable of removing the DMT group allowing oligonucleotide arrays to be synthesised using readily available 5′-O-DMT-nucleoside-3′-O-phosphoramidite monomers conventionally used in solid phase nucleic acid synthesis. A method of avoiding the effects of stray light in projection lithography techniques is also disclosed.

专利号:US-2010075297-A1
优先权日:2006-12-20
标题 :Photosensitive polypeptide and methods of their production and use
发明人：LAWRENCE DAVID S
权利人:LAWRENCE DAVID S
摘要:Methods for producing polypeptides caged with a photolabile group on one or more backbone nitrogens are provided, in which the photolabile group is added to a growing polypeptide chain during polypeptide synthesis. Photosensitive polypeptides produced by the methods are described, as are methods of using such photosensitive polypeptides to assay enzyme activity or inhibit protein-protein interactions. Methods for producing polypeptides caged with a photolabile group on one or more side chain nitrogens, where the photolabile group is incorporated into the side chain during polypeptide synthesis, are also provided.

专利号:WO-0053313-A2
优先权日:1999-03-09
标 题:Lanthanide catalysts for synthesis of compounds and combinatorial libraries