Direct Synthesis of Pyrazolo[5,1-a]isoindoles via Intramolecular Palladium-Catalyzed C-H Bond Activation was written by Choi, Young Lok;Lee, Hyuk;Kim, Bum Tae;Choi, Kihang;Heo, Jung-Nyoung. And the article was included in Advanced Synthesis & Catalysis in 2010.Synthetic Route of C7H5Br2F This article mentions the following:
An efficient, direct synthesis of pyrazolo[5,1-a]isoindoles, e.g., I, employing a palladium-catalyzed intramol. C-H bond activation of 1-(2-halobenzyl)pyrazoles has been developed. The use of lithium chloride (LiCl) was found to be essential in these reactions, to suppress further C-H bond activation at the C-3 position of pyrazolo[5,1-a]isoindole, when C-3 is unsubstituted. This protocol can be applied to the synthesis of a pyrazolo[5,1-a]isoquinoline possessing a six-membered central ring system and a fully substituted pyrazolo[5,1-a]isoindole using sequential intra- and intermol. C-H bond activation. In the experiment, the researchers used many compounds, for example, 2-Bromo-4-fluorobenzylbromide (cas: 61150-57-0Synthetic Route of C7H5Br2F).
2-Bromo-4-fluorobenzylbromide (cas: 61150-57-0) belongs to organobromine compounds. Bromo compounds are employed in a variety of metal-catalyzed coupling reactions. They are also ideal candidates for the synthesis of Grignard reagents that have wide-applicability in organic synthesis. Commercially available organobromine pharmaceuticals include the vasodilator nicergoline, the sedative brotizolam, the anticancer agent pipobroman, and the antiseptic merbromin. Synthetic Route of C7H5Br2F
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary