41309-99-3Relevant academic research and scientific papers
ZnI2-catalyzed cyanation of acyl chlorides with TMS-CN: An interesting role of iodine
Zeng, Wei,Yang, Jingya,Meng, Bo,Zhang, Bo,Jiang, Mingzhe,Chen, Fu-Xue
body text, p. 637 - 641 (2010/06/15)
Both aliphatic and aromatic acyl cyanides have been synthesized with TMSCN and acyl chloride with ZnI2 (0.5 mol%). However the in situ generated I2 is proposed accounting for the formation of by-product O-TMS enolate at high catalyst loading rather than 0.5 mol%. Asymmetric reduction of benzoyl cyanide with borane has been explored in 82% yield and 24% ee.
Thermolysis of acylazo O-trimethylsilyl cyanohydrins: Azoalkanes yielding captodatively substituted radicals
Billera, Charles F.,Dunn, Travis B.,Barry, David A.,Engel, Paul S.
, p. 9763 - 9768 (2007/10/03)
A new synthetic method has been developed for preparing azoalkanes bearing geminal α-cyano and α-trimethylsiloxy groups. While the symmetrical compound 5 decomposes near room temperature to afford, almost entirely, the C-C dimers, the unsymmetrical azoalkane 3 requires heating to 75 °C. The thermolysis activation parameters of 3 and 5 can be rationalized on steric grounds without invoking captodative radical stabilization. A 13C NMR product study of photolyzed 3 in the presence of TEMPO at 21 °C shows that the fate of caged [tert-butyl, 1-trimethylsiloxy-1-cyanoethyl (14)] radical pairs is disproportionation, 17%, cage recombination, 20%, and cage escape, 63%.
