Fig. 4 | Nature Communications

Fig. 4

From: Stereoselective synthesis of medium lactams enabled by metal-free hydroalkoxylation/stereospecific [1,3]-rearrangement

Fig. 4

Catalytic hydroalkoxylation/[1,3]-rearrangement of other ynamides 1. a Brønsted acid-catalyzed hydroalkoxylation/[1,3]-rearrangement of allyl alcohol-tethered ynamides 1af–1ah. b Zinc-catalyzed cascade cyclization of ynamide 1ai. c HNTf2-catalyzed cascade cyclization of other heterocycle-linked ynamides 1aj–1am. d Ynamides 1an–1ap which failed to give the desired products

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