Stepwise hydroformylation of C,N-divinylpyrroles with Rh4(CO)12 under mild conditions: an original synthesis of N-vinylpyrrolylmonoaldehydes and of pyrrolyldialdehydes

Autor:	Manuela Mariani, Aldo Caiazzo, Roberta Settambolo, Raffaello Lazzaroni
Rok vydání:	1999
Předmět:	Carbon atom Organic Chemistry chemistry.chemical_element Ring (chemistry) Biochemistry Medicinal chemistry Rhodium Catalysis Autoclave Inorganic Chemistry chemistry Materials Chemistry Organic chemistry Physical and Theoretical Chemistry Total pressure Chemoselectivity Hydroformylation
Zdroj:	Journal of Organometallic Chemistry. 592:69-73
ISSN:	0022-328X
DOI:	10.1016/s0022-328x(99)00483-0
Popis:	1,3-Divinylpyrrole and 1,2-divinylpyrrole were treated in a stainless steel autoclave with Rh4(CO)12 at 40°C and 120 atm of H2/CO total pressure: for both substrates exclusive hydroformylation of the vinyl groups bonded to the ring carbon atom occurred, the branched unsaturated monoaldehydes 2-(1-vinylpyrrolyl)propanals being formed with a very high chemoselectivity and α-regioselectivity. At 80°C only 1,3-divinylpyrrole gives, via hydroformylation of N-vinyl group, the corresponding dialdehydes.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::21b891516964120c90e304bda4129a8f https://doi.org/10.1016/s0022-328x(99)00483-0 Zobrazit plný text záznamu Full Text from ScienceDirect