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Nicholas-PKR

In a complementary contribution to this chemistry, Young assembled a [9.5.5] system by sequential metathesis reaction on a diene linked by a cobalt hexacarbonyl complexed alkyne followed by domino Nicholas-PKR which we will comment later [111]. [Pg.221]

Scheme 18 Spirocompound synthesis in a one pot procedure using a Nicholas-PKR sequence... Scheme 18 Spirocompound synthesis in a one pot procedure using a Nicholas-PKR sequence...
Scheme 20 Nicholas-PKR for the synthesis of propargyl allyltosylamides and subsequent cyclization... Scheme 20 Nicholas-PKR for the synthesis of propargyl allyltosylamides and subsequent cyclization...
As commented above, Young has reported one example of a Nicholas/PKR starting from cobalt complex 74, prepared by means of a RCM reaction [111]. The reaction of 74 with allyl alcohol in the presence of BF3Et20 gave enyne 75 which cyclized with f-BuSMe promotion to give tricycle 76 (Scheme 22). [Pg.224]

Scheme 21 Synthesis of natural sesquiterpene (+)-epoxidictimene using a tandem Nicholas-PKR as the key step... Scheme 21 Synthesis of natural sesquiterpene (+)-epoxidictimene using a tandem Nicholas-PKR as the key step...
Scheme 22 Cyclic alkynes in the PKR. Tandem Nicholas-PKR for a tricycle construction... Scheme 22 Cyclic alkynes in the PKR. Tandem Nicholas-PKR for a tricycle construction...
See other pages where Nicholas-PKR is mentioned: [Pg.207]    [Pg.221]    [Pg.223]    [Pg.167]    [Pg.207]    [Pg.220]    [Pg.221]    [Pg.223]   
See also in sourсe #XX -- [ Pg.221 ]

See also in sourсe #XX -- [ Pg.221 ]

See also in sourсe #XX -- [ Pg.221 ]



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Pauson-Khand reaction Nicholas-PKR

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