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Carbopalladation carbonylative lactonization/lactamization

With specially structured alkenes, such as norbomadiene, it is feasible to observe the in-termolecular version of the carbopalladation-carbonylative lactonization tand process, as shown in Scheme This also represents a rare example in which the termination step involves lactonization. Although a single example of termination by lactamization is shown in Eq. 6 of Scheme 13, there does not appear to be any example in which termination involves intermolecular amidation. [Pg.1441]

Termination of cyclic carbopalladation of alkynes via carbonylative lactonization/ lactamization has been achieved with alkenyl iodides containing an ca oxydryl or amido/amino moiety [85]. [Pg.236]

As in the cases of termination by lactonization and lactamization, some specially structured alkenes, such as norbomene and related alkenes, can participate in intermolecular carbopalladation-carbonylative ketonization tandem processes. In the reactions shown in Scheme 22, the acylpalladium intermediates undergo intramolecular acylpalladation with arenes to provide ketones. ... [Pg.1446]




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Carbonylation lactamization

Carbonylative lactonization

Carbopalladations

Lactam 3-lactone

Lactams carbonylation

Lactams lactones

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