CAS: 504-30-3; Pyridazin-3(2H)-One

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CAS号110-89-4 六氢吡啶 | CAS号60-29-7 乙醚 | CAS号106-89-8 环氧氯丙烷 | CAS号56872-17-4 6-(3-allyl-4-hy... | CAS号75-44-5 光气 | CAS号106-95-6 烯丙基溴 | CAS号39499-64-4 6-(3-hydroxyphe... | CAS号178047-61-5 3-phenyl-8aH-[1... | CAS号14135-63-8 2-phenylpyridaz... | CAS号88491-61-6 3-溴哒嗪 | CAS号1120-95-2 3-氯哒嗪 | CAS号917871-49-9 2-[2-(4-chlorop... | CAS号95209-84-0 2-(6-氧代哒嗪-1(6H)-基)乙酸 | CAS号551920-26-4 1-(6-羟基吡唑并[1,5-...

4,5-二氯-3-羟基哒嗪置于sodium Hydroxide,Palladium On Activated Charcoal体系中,化学反应生成 3-哒嗪酮
参考文献:杂环研究中的化学研究.16. Mitteilung.哒嗪.3,4,6-三氯哒嗪取代
标题:杂环研究中的化学研究.16. Mitteilung.哒嗪.3,4,6-三氯哒嗪取代
摘要:3,4,6-三氯哒嗪被转化为许多新化合物,其结构由其化学和光谱性质确定.
DOI:10.1002/hlca.19560390634

专利信息

专利号:US-10751419-B2
优先权日:2014-05-01
标题:Method for synthesis of reactive conjugate clusters
发明人：MIGAWA MICHAEL T; YU JINGHUA; WAN W BRAD; PATEL SAYTEN P; VASQUEZ GUILLERMO; KINBERGER GARTH A; PRAKASH THAZHA P; SETH PUNIT P; SWAYZE ERIC E
权利人:IONIS PHARMACEUTICALS INC
摘要:Provided herein are improved methods for the synthesis of reactive conjugate clusters and intermediates used in such methods. In particular, improvements are provided that enhance the synthesis of reactive conjugate clusters by reducing the number of synthetic steps required. The reactive conjugate clusters prepared using the improved methods don't include any transacylation impurities that are formed using existing methods. The improved methods also provide an increase in overall yield and a cost benefit over existing methods.

专利号:US-11542269-B2
优先权日:2018-01-03
标 题:Prins reaction and compounds useful in the synthesis of halichondrin macrolides and analogs thereof
发明人：CHOI HYEONG-WOOK; FANG FRANCIS G
权利人:EISAI R&D MAN CO LTD
摘要:The invention provides methods utilizing Prins reaction in the preparation of compounds that may be useful as intermediates in the synthesis of halichondrin macrolides and analogs thereof. The invention also provides compounds that may be useful as intermediates in the synthesis of a halichondrin macrolides and methods for preparing the same.

专利号:WO-2024084491-A1
优先权日:2022-10-21
标题:Process for synthesis of res metirom and its intermediates thereof
发明人：MEHTA NILESH VIPINCHANDRA
权利人:MEHTA NILESH VIPINCHANDRA
摘要:The present invention discloses a process for synthesis of Res metirom and its intermediates thereof. More particularly, the invention discloses process for synthesis of a key intermediate, 6-(4-amino, 2,6-dichlorophenoxy)4- isopropylpyridazin-3(2H)-one, of Res metirom via novel intermediate compounds of formula A. Wherein, R is selected from methyl, ethyl and propyl.

专利号:US-10913749-B2
优先权日:2015-05-07
标 题 :Macrocyclization reactions and intermediates and other fragments useful in the synthesis of halichondrin macrolides
发明人：FANG FRANCIS G; KIM DAE-SHIK; CHOI HYEONG-WOOK; CHASE CHARLES E
权利人:EISAI R&D MAN CO LTD
摘要:The invention provides methods for the synthesis of a halichondrin macrolides through a macrocyclization strategy. The macrocyclization strategy of the present invention involves subjecting a non-macrocyclic intermediate to a carbon-carbon bond-forming reaction (e.g., an olefination reaction (e.g., Horner-Wadsworth-Emmons olefination), catalytic Ring-Closing Olefin Metathesis, or Nozaki-Hiyama-Kishi reaction) to afford a macrocyclic macrolide. The invention also provides compounds useful as intermediates in the synthesis of a halichondrin macrolides and methods for preparing the same.

专利号:US-11136335-B2
优先权日:2016-06-30
标题:Prins reaction and intermediates useful in the synthesis of halichondrin macrolides and analogs thereof
发明人：CHASE CHARLES E; CHOI HYEONG-WOOK; ENDO ATSUSHI; FANG FRANCIS G; KIM DAE-SHIK
权利人:EISAI R&D MAN CO LTD
摘要:The invention provides methods for the synthesis of a halichondrin macrolides or analogs thereof through a cyclization reaction strategy. The strategy of the present invention involves subjecting an intermediate to Prins reaction conditions to afford a macrolide. The invention also provides compounds useful as intermediates in the synthesis of a halichondrin macrolides or analogs thereof and methods for preparing the same.

专利号:US-6022963-A
优先权日:1995-12-15
标 题:Synthesis of oligonucleotide arrays using photocleavable protecting groups
发明人：MCGALL GLENN H; NAM NGO QUOC
权利人:AFFYMETRIX INC
摘要:Novel compounds are provided which are useful as linking groups in chemical synthesis, preferably in the solid phase synthesis of oligonucleotides and polypeptides. These compounds are generally photolabile and comprise protecting groups which can be removed by photolysis to unmask a reactive group. The protecting group has the general formula Ar-C(R1)(R2)-O-C(O)- wherein: Ar is an optionally substituted fused polycyclic aryl or heteroaromatic group or a vinylogous derivative thereof; R1 and R2 are independently H, optionally substituted alkyl, alkenyl or alkynyl, optionally substituted aryl or optionally substituted heteroaromatic, or a vinylogous derivative of the foregoing; and X is a leaving group, a chemical fragment linked to Ar-C(R1)(R2)-O-C(O)- via a heteroatom, or a solid support; provided that when Ar is 1-pyrenyl and R1=R2=H, X is not linked to Ar-C(R1)(R2)-O-C(O)- via a nitrogen atom. Preferred embodiments are those in which Ar is a fused polycyclic aromatic hydrocarbon and in which the substituents on Ar, R1 and R2 are electron donating groups. A particularly preferred protecting group is the 'PYMOC' protecting group, pyrenylmethyloxycarbonyl, where Ar=pyrenyl and R1=R2=H. Also provided is a method of forming, from component molecules, a plurality of compounds on a support, each compound occupying a separate predefined region of the support, using the protected compounds described above.