CAS: 26076-46-0; Thiophene-2,5-Diyldiboronic Acid

上下游产品

2,5-dibromothiophen Trimethyl borate 2,5-bis(3,5-dimethyl-4-[9-{10-(4-(t-butyl)-2,6-dimethylphenyl)}anthryl]diazomethylphenyl)thiophene 2,5-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiophene

📜5-Butyl-1-Thiophen-2-Yl-2,8-Dioxa-5-Azonia-1-Boranuidabicyclo[3.3.0]octane置于正丁基锂,硼酸三异丙酯,二异丙胺,硫酸体系中,用 四氢呋喃,水 用作溶剂,化学反应 0.5H,以72%的收率获得2,5-二硼酸噻吩
参考文献:硼酸基团在硼化噻吩锂化中的导向作用
标题:硼酸基团在硼化噻吩锂化中的导向作用
摘要:对噻吩硼酸酯的研究揭示了金属化反应在合成各种锂化噻吩硼酸酯中的有用性,这些锂化噻吩硼酸酯进一步转化为功能化的噻吩硼酸酯衍生物.2-和3-噻吩基硼n-丁基二乙醇胺(Bdea) 酯与二异丙基氨基锂和2,2,6,6-四甲基哌啶锂的锂化表明两种硼化噻吩都容易去质子化.在后一种情况下,由于硼烷基的显着稳定作用,与硫和硼烷基相邻的 2-位的锂化在热力学上是有利的.用一系列亲电子试剂进一步衍生,然后水解,得到各种 2-取代的 3-噻吩硼酸.[thb(Or)3]Li 类型的相应噻吩硼酸盐"ate"配合物的锂化表明 2-噻吩衍生物不能被有效地去质子化,而"ate"配合物 [3-Thb(Oet)3]Li,在 C-2 处用 Nbuli 选择性锂化.这表明阴离子硼酸盐部分的导向作用.得到的双金属物质 [(2-Li-3-Th)B(Oet)3]Li 在加热时发生闭环二聚反应,在随后的水解后得到 4,8-二氢-4,8-二羟基-P
Doi:10.1002/ejoc.201101764

专利信息

专利号:US-8207337-B2
优先权日:2007-01-29
标 题:Reagent for organic synthesis reaction containing organic triol borate salt
发明人：MIYAURA NORIO; YAMAMOTO YASUNORI
权利人:MIYAURA NORIO; YAMAMOTO YASUNORI; WAKO PURE CHEM IND LTD
摘要:[Problem] n To provide an organoboron compound-containing reagent for organic synthesis reactions which undergoes no trimerization with dehydration, does not necessitate activation with a base, and is stable and highly active. n [Means for Solving Problems] n The reagent for organic synthesis reactions contains an organic triol borate salt represented by any of the general formulae (I) to (III) and general formula (XVI): (wherein R 1 represents alkyl, alkenyl, etc.; R 2 represents optionally substituted alkyl, alkenyl, alkynyl, etc. or represents hydrogen; m + represents an alkaline metal ion, phosphonium ion, or given ammonium ion; M 2+ represents an alkaline earth metal; X represents halogen or alkoxide; Y represents an alkali metal ion, etc.; A represents optionally substituted methylene; and n represents an integer).

专利号:US-9917260-B2
优先权日:2013-08-23
标题 :Compounds with terminal heteroarylcyanovinylene groups and their use in organic solar cells
发明人：SUNDARRAJ SUDHAKAR; EICKHOFF CHRISTIAN; BAHULAYAN SHEEJA; SEND ROBERT; NISHIMAE YUICHI; REICHELT HELMUT; TANABE JUNICHI; ERK PETER
权利人:BASF SE
摘要:The present invention relates to a photoactive material comprising a donor substance and an acceptor substance, wherein the donor substance comprises or consists of one or more compounds of formula (I) described herein, or the acceptor substance comprises or consists of one or more compounds of formula (I) described herein, or the donor substance comprises or consists of a first compound of formula (I) described herein and the acceptor substance comprises a second compound of formula (I) described herein with the proviso that the first and second compound are not the same, as well as to an organic solar cell comprising said photoactive material. The present invention also relates to a photoelectric conversion device comprising or consisting of two or more organic solar cells comprising said photoactive material and to compounds of formula (I) as described herein for use as donor substance or as acceptor substance in a photoactive material, Further, the present invention relates to the use of a compound of formula (III) as described herein in the synthesis of a compound of formula (I)as described herein.

专利号:US-2022378668-A1
优先权日:2019-10-31
标 题:Dental varnish
发明人：JHA AMIT; SIMONTON THOMAS
权利人:DENTSPLY SIRONA INC
摘要:Described herein are dental treatment compositions, more particularly, a dental varnish composition useful in effective fluoridation, enhancement of remineralization the tooth enamel, and hypersensitivity through occlusion of dentine tubule. The dental varnish composition includes a hydrogel system and at least one fluoride source, wherein the dental varnish is water soluble. The hydrogel system includes at least one polyphenol having at least one phenol group, at least one polymer, and a metal ion. Described herein are also methods of making dental varnish composition in a single step and one pot synthesis.