Cobalt catalyzed carbonylation of unactivated C(sp3)–H bonds† †Electronic supplementary information (ESI) available. CCDC 1507203 (2t) & 1507204 (2a). For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c6sc05026c Click here for additional data file. Click here for additional data file.
نویسندگان
چکیده
A general efficient regioselective cobalt catalyzed carbonylation of unactivated C(sp)–H bonds of aliphatic amides was demonstrated using atmospheric (1–2 atm) carbon monoxide as a C1 source. This straightforward approach provides access to a-spiral succinimide regioselectively in a good yield. Cobalt catalyzed sp C–H bond carbonylation is reported for the first time including the functionalization of (b)-C–H bonds of a-1 , 2 , 3 carbons and even internal (b)-C–H bonds. Our initial mechanistic investigation reveals that the C–H activation step is irreversible and will possibly be the rate determining step.
منابع مشابه
Rhodium(i)-catalyzed stereoselective [4+2] cycloaddition of oxetanols with alkynes through C(sp3)–C(sp3) bond cleavage† †Electronic supplementary information (ESI) available. CCDC 1512439 and 1512440. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c6sc05246k Click here for additional data file. Click here for additional data file.
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Transformable H-bonds and conformation in compressed glucose† †Electronic supplementary information (ESI) available: Detailed experimental data; detailed structural data. CCDC 1033994–1034008. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c4sc03588g Click here for additional data file. Click here for additional data file. Click here for additional data file. Click here for additional data file.
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Introducing unactivated acyclic internal aliphatic olefins into a cobalt catalyzed allylic selective dehydrogenative Heck reaction† †Electronic supplementary information (ESI) available. CCDC 1507233. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c7sc01204g Click here for additional data file. Click here for additional data file.
Unactivated acyclic internal aliphatic olefins are often found to be unreactive in conventional alkenylation reactions. To address this problem, a cobalt catalyzed allylic selective dehydrogenative Heck reaction with internal aliphatic olefins has been developed. The method is highly regioand stereoselective, the conditions are mild and a wide variety of functional groups can be tolerated. Rema...
متن کاملVersatile telluracycle synthesis via the sequential electrophilic telluration of C(sp2)–Zn and C(sp2)–H bonds† †Electronic supplementary information (ESI) available. CCDC 1523262–1523264. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c7sc01162h Click here for additional data file. Click here for additional data file.
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Rh(iii)-catalyzed double C–H activation of aldehyde hydrazones: a route for functionalized 1H-indazole synthesis† †Electronic supplementary information (ESI) available. CCDC 1499990. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c6sc03888c Click here for additional data file. Click here for additional data file.
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