Abstract
AbstractAn efficient trimerization of ynals to diversely substituted 4H‐pyran constructs has been executed in water, under ambient conditions employing micellar catalysis. The method is in agreement with the ideas of green and sustainable chemistry. The locus of the micellar reaction site has been probed through proton NMR studies. A general acid‐mediated downstream rearrangement of the derived 4H‐pyrans to interesting 2,8‐dioxabicyclo[3.3.1]nona‐3,6‐dienes has been observed.
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