… , Cyclohexenones and Pyran-4-ones by Cyclocondensation of 1, 3-Bis (silyloxy)-1, 3-butadienes with 4, 4-Dimethoxy-1, 1, 1-trifluorobut-3-en-2-one: Influence of the …
... Volume: Page ... This type of process has been previously reported.(23). The TiCl 4 -mediated reactions of 1a,b with 1,3-bis(silyloxy)-1,3-butadienes 2a−r ... The reaction of 1a with 1,3-bis(silyloxy)-1,3-butadiene 2a, carried out in the presence of Me 3 SiOTf (1.0 equiv ...