Rhodium-catalyzed [2 + 2] cycloaddition of ynamides with nitroalkenes.

Rhodium-catalyzed [2 + 2] cycloaddition of ynamides with nitroalkenes.

Organic letters (2012-09-08)

Donna L Smith, Suresh Reddy Chidipudi, William R Goundry, Hon Wai Lam

RESUMEN

In the presence of a diene-ligated rhodium complex, ynamides and nitroalkenes undergo catalytic [2 + 2] cycloadditions to provide cyclobutenamides. The presence of sodium tetraphenylborate was found to be crucial for the reactions to proceed efficiently.

MATERIALES

Referencia del producto

Marca

Descripción del producto

T25402

Sigma-Aldrich

Sodium tetraphenylborate, ACS reagent, ≥99.5%

466689

Sigma-Aldrich

Potassium tetraphenylborate, 97%

380520

Sigma-Aldrich

Ammonium tetraphenylborate, 99%

72020

Sigma-Aldrich

Sodium tetraphenylborate, puriss. p.a., ACS reagent, ≥99.5% (NT)