The carboxylative cyclization of propargyl alcohol and carbon dioxide catalyzed by organocatalysts

Pyridinylidenaminophosphines as Versatile Organocatalysts for CO2 Transformations into Value‐Added Chemicals

“…I). [33][34][35][36] In 2019, the Shi group utilized the electron-withdrawing group functionalized propargylic alcohols as substrates to facilitate the cyclization under ambient conditions. [37] Frustrated Lewis pairs (FLPs) chemistry is a booming research field in small molecule activation, [38][39][40][41][42][43][44][45][46][47] and structure-diverse FLPs variants involving the combination of tertiary phosphines with B, Al electrophiles were also described for CO 2 activation, capture and catalytic reduction through the synergic effect of Lewis acid-base (Scheme 1.…”

“…firstly reported tributylphosphine‐catalyzed carboxylative cyclization of propargylic alcohols with CO 2 for the synthesis of α ‐methylene cyclic carbonates, harsh reaction conditions such as high temperature and pressure, are required for this process (Scheme 1. I) [33–36] . In 2019, the Shi group utilized the electron‐withdrawing group functionalized propargylic alcohols as substrates to facilitate the cyclization under ambient conditions [37] .…”