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异氰酸甲酯置于ammonium Hydroxide体系中,用 水 作为反应溶剂,化学反应 3.5H,以99%的收率获得产物n-甲基脲
参考文献:非规范rna核苷作为早期地球的分子化石-益生元甲基化和氨基甲酸酯化反应生成
标题:非规范rna核苷作为早期地球的分子化石-益生元甲基化和氨基甲酸酯化反应生成
摘要:Rna世界假说假设地球上的生命始于催化其自身形成的小rna分子.对该假设至关重要的是,需要针对rna的益生元途径.然而,当代rna不仅由四个规范的核碱基(a,C,G和u)构建,而且还包含许多化学修饰的(非规范)碱基.一个尚待解决的问题是,当生命需要更高的功能多样性(生物起源)时,这些非规范碱基是否与规范碱基(化学起源)平行或更晚地形成.在这里,我们显示异氰酸酯与亚硝酸钠的组合建立了与地球早期条件相容的甲基化和氨基甲酰化反应性.这些反应导致仍然存在的甲基化和氨基酸修饰的核苷的形成.
DOI:10.1002/anie.201801919

专利信息

专利号:WO-9517903-A1
优先权日:1993-12-28
标 题:Modular design and synthesis of oxazolone-derived molecules
发明人：HOGAN JOSEPH C JR; CASEBIER DAVID; FURTH PAUL; TU CHENG
权利人:ARQULE PARTNERS L P; HOGAN JOSEPH C JR; CASEBIER DAVID; FURTH PAUL; TU CHENG
摘要:The design and synthesis of novel oxazolone-derived molecular modules and the use of the modules in the construction of new molecules and fabricated materials is disclosed. The new molecules and fabricated materials are molecular recognition agents useful in the design and synthesis of drugs, and have applications in separations and materials science.

专利号:US-2024424490-A1
优先权日:2021-01-25
标 题 :Method of synthesis of carbon-supported platinum group metal or metal alloy nanoparticles
发明人：WNUK PAWEL; LEWERA ADAM; JURCZAKOWSKI RAFAL; POWALA FILIP; KOLODZIEJCZYK JAN
权利人:UNIV WARSZAWSKI
摘要:The presented invention relates to a method of synthesis of carbon-supported platinum group metal or metal alloy nanoparticles, which comprises the following steps:n adsorbing on carbon support complexes of a platinum group metal with a urea complexing agent selected from a group comprising urea, urea derivative, a mixture of urea with at least one urea derivative, and a mixture of at least two urea derivatives; and reducing the complexes adsorbed on the carbon support to metal nanoparticles, forming a product of carbon-supported metal nanoparticles. nn The invention also provides the use of the carbon-supported platinum group metal or metal alloy nanoparticles obtained by the method of the invention as catalyst. n The present invention further relates to a method of adsorption of precursors of platinum group metals on the surface of a carbon support and use of complexes of platinum group metals with urea complexing agent for adsorption of platinum group metal precursors on carbon support.

专利号:US-5919969-A
优先权日:1996-06-05
标 题 :Synthesis of yellow couplers
发明人：CRAWLEY MICHAEL W
权利人:EASTMAN KODAK CO
摘要:The invention provides a method of synthesis of a image-dye forming coupler of formula (I) wherein X is a substituent linked to the coupler by an atom of oxygen, sulfur or nitrogen R1 is an alkyl or aryl group, R2 is a hydrogen atom or an alkyl group; R3 to R7 are the same or different and selected from a hydrogen atom and substituent groups; which method comprises the reaction of a compound of formula (II) wherein R and R1 are the same or different and are as defined above for R1 and X is as defined above with a compound of formula (III) wherein R2 to R7 are as defined above, in the presence of an inert organic solvent.

专利号:WO-2017175233-A1
优先权日:2016-04-04
标 题:Process for large scale liquid phase synthesis of carbetocin and its novel intermediates
发明人：Mohammed Khalid Anwer; Mohammed Mohosin Layek
权利人:DAVULURI RAMAMOHAN RAO
摘要:A process for large scale liquid phase synthesis of Carbetocin is disclosed. Novel intermediates of formula (A), formula (B), and processes for their preparation are also disclosed.

专利号:US-11401235-B2
优先权日:2015-09-22
标 题 :Synthesis of terphenyl compounds
发明人：KAYE ANTHONY; QUAZI NURUL; FEAST GEORGE; LAKSHMAN MARSHNIL
权利人:VECTUS BIOSYSTEMS LTD
摘要:The present invention relates novel methods of synthesizing terphenyl compounds and in particular to novel methods for the synthesis of a compound of Formula I n nor intermediates thereof.

专利号:US-7737284-B2
优先权日:2001-01-18
标题 :Synthesis of temozolomide and analogs
发明人：KUO SHEN-CHUN; MAS JANET L; HOU DONALD CHEN-TUNG
权利人:SCHERING PLOUGH CORP
摘要:This invention relates to a novel process for the synthesis of Temozolomide, an antitumor compound, and analogs, and to intermediates useful in this novel process.