Uma rota alternativa para a sintese de PPh2Si(CH3)3 segundo Appel; preparacao e purificacao de PPh2H (Ph = FENILA)



Document title: Uma rota alternativa para a sintese de PPh2Si(CH3)3 segundo Appel; preparacao e purificacao de PPh2H (Ph = FENILA)
Journal: Quimica nova
Database: PERIÓDICA
System number: 000196069
ISSN: 0100-4042
Authors: 1
Institutions: 1Universidade Federal de Santa Maria, Departamento de Quimica, Santa Maria, Rio Grande do Sul. Brasil
Year:
Season: Ene-Feb
Volumen: 24
Number: 1
Pages: 133-134
Country: Brasil
Language: Portugués
Document type: Nota breve o noticia
Approach: Experimental, divulgación
English abstract The unexpected low yield in the Appel's synthesis of PPh2Si(CH3)3 can be attributed to the presence of phenyllithium and its interfering reactions. The method was carried out with hydrolysis of the products formed by the reaction of PPh3 with metallic lithium, phenyllithium and lithiumdiphenylphosphide. PPh2Si(CH3)3 was obtained by subsequent reaction of the resulting diphenylphosphin with elemental lithium and ClSi(CH3)3
Disciplines: Química
Keyword: Química orgánica,
Síntesis de Appel,
Organosililfosfinas,
Bajo rendimiento,
Rendimiento,
Reacción,
Difenilfosfina,
Litio
Keyword: Chemistry,
Organic chemistry,
Appel's synthesis,
Organosilylphosphines,
Low yield,
Yield,
Reaction,
Diphenylphosphin,
Litium
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