专利号:US-12358871-B2 优先权日:2019-05-15 标 题:Photochemical synthesis of vitamin D3 using sensitizers 发明人:DATLA ANUPAMA; NAGRE PRASHANT; TAMORE JAGDISH; TRIVIKRAM SREENATH; DEGAONKAR GAJANAN 权利人:FERMENTA BIOTECH LTD 摘要:The present invention discloses an improved photochemical synthesis of vitamin D3 from 7-dehydrocholesterol alone or in combination with sterol precursors in presence of the photosensitizer of Formula I in high yield and with reduced levels of impurities.
专利号:US-9379335-B2 优先权日:2012-04-08 标题:Benzodipyrrolidones and their polymers: synthesis and applications for organic electronics and optoelectronics 发明人:CUI WEIBIN; WUDL FRED 权利人:UNIV CALIFORNIA 摘要:Disclosed is the synthesis of benzodipyrrolidone and their polymers and small molecules for electronic and optoelectronic applications. Also disclosed are devices that incorporate such polymers and small molecules.
专利号:US-8653231-B2 优先权日:2007-05-31 标题:Synthesis of conducting polymer nanofibers using an oligomer of a monomer as an initiator 发明人:KANER RICHARD B; SHIN KOO; TRAN HENRY HIEP D 权利人:KANER RICHARD B; SHIN KOO; TRAN HENRY HIEP D; UNIV CALIFORNIA 摘要:The present invention involves synthesizing conducting polymer nanofibers by mixing an oxidant solution with a monomer solution, which includes a monomer and an oligomer of the monomer that is used as an initiator. The oxidant solution includes an oxidizing agent, or oxidant, such as ferric chloride to oxidize the monomer, the oligomer, or both, and begin polymerization. By including an initiator in the form of the oligomer, which may have a lower oxidation potential than the monomer, the rate of polymerization is accelerated, resulting in the nanofibrous morphology. Therefore, the conducting polymer nanofibers may be synthesized without the use of surfactants, hard templates, or seeds, resulting in a simplified and accelerated polymerization process, which enhances homogenous nucleation of the conducting polymer nanofibers.
专利号:US-8450503-B2 优先权日:2002-08-09 标题:Photochromic and electrochromic compounds and methods of synthesizing and using same 发明人:BRANDA NEIL R; PETERS ANDREA; WIGGLESWORTH ANTHONY J 权利人:BRANDA NEIL R; PETERS ANDREA; WIGGLESWORTH ANTHONY J; SWITCH MATERIALS INC 摘要:This invention relates to novel photochromic and electrochromic monomers and polymers based on 1,2-dithienylcyclopentene derivatives and method of using and synthesizing same. The compounds are reversibly interconvertible between different isomeric forms under suitable photochromic or electrochromic conditions. The electrochromic conversion may be catalytic. The application also relates to ultra-high density homopolymers prepared using ring-opening methathesis polymerization (ROMP) where the central ring of the 1,2-bis(3-thienyl)-cyclopentene is incorporated directly into the polymer backbone. The monomer units may be readily functionalized to enable the synthesis of polymers with diverse structural and electronic properties. The compounds have many potential applications including high-density optical information storage systems, photoregulated molecular switches, reversible holographic systems, ophthalmic lenses, actinometry and molecular sensors, photochromic inks, paints and fibers and optoelectronic systems such as optical waveguides, Bragg reflectors and dielectric mirrors.
专利号:US-9453102-B2 优先权日:2013-10-18 标题:Synthesis of chalcogen-capped pi-conjugated polymers 发明人:LUSCOMBE CHRISTINE KEIKO; OKAMOTO KEN 权利人:UNIV WASHINGTON THROUGH ITS CENTER FOR COMMERCIALIZATION 摘要:Methods for the preparation of mono- and bis-end-functionalized Ï€-conjugated polymers. In the methods, chalcogens are selectively installed at the polymer terminus or termini.
专利号:US-8895730-B2 优先权日:2011-09-22 标 题 :Synthesis of two-photon absorbing polyhydroxy diphenylamino-dialkylfluorene-1,3,5-triazine molecules 发明人:TAN LOON-SENG; KANNAN RAMAMURTHI; DALTON MATTHEW 权利人:US AIR FORCE 摘要:A method of synthesizing a two-photon active tris(diarylamino-9,9-di(R)fluorenyl)-1,3,5-triazine compound having the structure: n nwhere Y is hydrogen, a thermally self-polymerizable acrylic, or a methacrylic group; R is an alkyl group of the formula —C m H 2m+1 , wherein the subscript m ranges from 1 to 6, or an alkylether group of the formula —(CH 2 CH 2 O) p Me, wherein the subscript p ranges from 1 to 5; R′ is an alkyl group; and the R′—(OY) x groups are attached to the phenyl rings of the triarylamine moiety either in a para position or a meta position and the subscript x ranges from 1 to 3. The compound may be synthesized by (a) synthesizing a diarylamine intermediate, (b) synthesizing a brominated 1,3,5-triazine intermediate as a three-arm core structure, and (c) forming the two-photon active tris(diarylamino-9,9-di(R)fluorenyl)-1,3,5-triazine compound by covalently joining the diarylamine and each arm of the three-arm core structure and removing the acetone protecting groups. The diarylamine intermediate may be synthesized by protecting tris-1,1,1-(hydroxymethyl)ethane, via a ketal formation with acetone, as an acetonide derivative; furnishing bromophenoxy-methyltrimethyl-1,3-dioxane from the acetonide derivative; and arylating aniline with the bromophenoxy-methyltrimethyl-1,3-dioxane.
摘要:Schatz, J.; Seler, M., Science of Synthesis Knowledge Updates, (2011) 2, 429. 摘要:Harris, P. A., Science of Synthesis: Knowledge Updates, (2024) 1, 8. 摘要:Harris, P. A., Science of Synthesis: Knowledge Updates, (2024) 1, 22. 摘要:Harris, P. A., Science of Synthesis: Knowledge Updates, (2024) 1, 10. 摘要:Harris, P. A., Science of Synthesis: Knowledge Updates, (2024) 1, 23.