A one-pot-three-step route to triazolotriazepinoindazolones from oxazolino-2H-indazoles.

A one-pot-three-step route to triazolotriazepinoindazolones from oxazolino-2H-indazoles.
复制标题

DOI:
10.1021/ol3015804
复制
发表时间:
2012-08-03
期刊:
影响因子:
5.2
通讯作者:
Kurth, Mark J.
Kurth, Mark J.
中科院分区:
化学1区
文献类型:
--
作者:
Conrad, Wayne E.;Rodriguez, Kevin X.;Nguyen, Huy H.;Fettinger, James C.;Haddadin, Makhluf J.;Kurth, Mark J.

文献摘要

参考文献

被引文献

相似文献

建立了一锅三步法将恶唑啉- 2h -茚唑转化为具有三点多样性的三唑-三氮平茚唑酮。该过程的第一步是由丙炔溴引发的恶唑啉- 2h -茚唑(可通过戴维斯-贝鲁特反应得到)开环,得到N1-(丙炔)- n2 -(2-溴乙基)-二取代茚唑酮,然后进行- ch2br→- ch2n3置换(第二步),然后进行非催化的分子内叠氮-炔1,3偶极环加成(第三步)形成目标杂环。采用7-溴恶唑啉- 2h -茚唑可以进一步多样化,例如,通过钯催化偶联化学,如本文所报道的。
A one-pot–three-step method has been developed for the conversion of oxazolino-2H-indazoles into triazolotriazepinoindazolones with three points of diversity. Step one of this process involves a propargyl bromide-initiated ring opening of the oxazolino-2H-indazole (available by the Davis-Beirut reaction) to give an N1-(propargyl)-N2-(2-bromoethyl)-disubstituted indazolone, which then undergoes –CH2Br → –CH2N3 displacement (step two) followed by an uncatalyzed intramolecular azide-alkyne 1,3-dipolar cycloaddition (step three) to form the target heterocycle. Employing 7-bromooxazolino-2H-indazole allows for further diversification through, for example, palladium-catalyzed coupling chemistry, as reported here.
DOI: 10.1021/ol800291t
发表时间: 2008-04-17
期刊: ORGANIC LETTERS
影响因子: 5.2
作者:
Oliva, Ana I.;Christmann, Ute;Pericas, Miquel A.
通讯作者: Pericas, Miquel A.
DOI: 10.1021/jo0524831
发表时间: 2006-03-31
影响因子: 3.6
作者:
Mills, AD;Nazer, MZ;Kurth, MJ
通讯作者: Kurth, MJ
DOI: 10.1016/j.bmcl.2006.07.026
发表时间: 2006-10-01
影响因子: 2.7
作者:
Kawanishi, Nobuhiko;Sugimoto, Tetsuya;Hirai, Hiroshi
通讯作者: Hirai, Hiroshi
DOI: 10.1021/ol103108z
发表时间: 2011-03-04
期刊: ORGANIC LETTERS
影响因子: 5.2
作者:
Avila, Belem;Solano, Danielle M.;Haddadin, Makhluf J.;Kurth, Mark J.
通讯作者: Kurth, Mark J.
DOI: 10.3109/14756360903524304
发表时间: 2011-02-01
影响因子: 5.6
作者:
Kharb, Rajeev;Sharma, Prabodh Chander;Yar, Mohammed Shahar
通讯作者: Yar, Mohammed Shahar