专利号:WO-2023237381-A1 优先权日:2022-06-09 标题:Process for the synthesis of polyethylenes or copolymers of ethylene and 1,3-diene having a terminal ketone function 发明人:BOISSON CHRISTOPHE; D'AGOSTO FRANCK; DESGRANGES ARIANE; NGO ROBERT; JEAN-BAPTISTE-DIT-DOMINIQUE FRANÇOIS 权利人:MICHELIN & CIE; CENTRE NAT RECH SCIENT; ECOLE SUPERIEURE DE CHIMIE PHYSIQUE ELECTRONIQUE LYON; UNIV CLAUDE BERNARD LYON 摘要:The invention relates to a method for preparing a polyethylene having a terminal ketone function or a copolymer of ethylene and a 1,3-diene and optionally a vinyl aromatic compound which contains more than 50 mol% of ethylene and has a terminal ketone function; said method comprises a polymerization reaction of the monomers in the presence of a borohydrido-neodymocene complex and an organo-magnesium compound, followed by a coupling reaction with a compound having a nitrile function, and then a hydrolysis reaction.
专利号:US-8541569-B2 优先权日:2008-09-06 标题:Phosphoramidites for synthetic RNA in the reverse direction, efficient RNA synthesis and convenient introduction of 3'-end ligands, chromophores and modifications of synthetic RNA 发明人:SRIVASTAVA SURESH C; SRIVASTAVA NAVEEN P 权利人:SRIVASTAVA SURESH C; SRIVASTAVA NAVEEN P; CHEMGENES CORP 摘要:The present invention provides building blocks and methods for synthesizing very pure RNA in a form that can efficiently be modified at the 3′ end. Reverse RNA monomer phosphoramidites have been developed for RNA synthesis in 5′→3′ direction, leading to very clean oligo synthesis that allows for the introduction of various modifications at the 3′-end cleanly and efficiently. Higher coupling efficiency per step have been observed during automated oligo synthesis with the reverse RNA amidites disclosed herein, resulting in a greater ability to achieve higher purity and produce very long oligonucleotides. The use of the reverse RNA phosphoramidites in the synthetic process of this invention leads to oligonucleotides free of N+1 species.
专利号:CN-119343386-A 优先权日:2022-06-09 标 题:Synthesis of polyethylene or copolymer of ethylene and 1, 3-diene having terminal ketone function
专利号:US-8053165-B2 优先权日:2008-03-18 标 题:Hydroxyl-containing monomer, polymer, resist composition, and patterning process 发明人:KINSHO TAKESHI; OHASHI MASAKI; HASEGAWA KOJI; WATANABE TAKERU 权利人:SHINETSU CHEMICAL CO 摘要:A hydroxyl-containing monomer of formula (1) is provided wherein R 1 is H, F, methyl or trifluoromethyl, R 2 and R 3 are monovalent C 1 -C 15 hydrocarbon groups, or R 2 and R 3 may form an aliphatic ring. The monomers are useful for the synthesis of polymers which have high transparency to radiation of up to 500 nm and the effect of controlling acid diffusion so that the polymers may be used as a base resin to formulate radiation-sensitive resist compositions having a high resolution.
专利号:US-2011137010-A1 优先权日:2008-09-06 标题 :Phosphoramidites for synthetic rna in the reverse direction, efficient rna synthesis and convenient introduction of 3'-end ligands, chromophores and modifications of synthetic rna
摘要:Mase, N., Science of Synthesis: Water in Organic Synthesis, (2012) 1, 191. 摘要:Payne, P. R.; Gagné, M. R., Science of Synthesis: N-Heterocyclic Carbenes in Catalytic Organic Synthesis, (2016) 1, 382.