Internal chirality transfer in the reaction of substituted cyclic (S,O)-ketene ortho esters with aldehydes catalysed by Lewis acidElectronic supplementary information (ESI) available: Experimental details. See http://www.rsc.org/suppdata/cc/b3/b305003c/
Internal chirality transfer in the reaction of substituted cyclic (S,O)-ketene ortho esters with aldehydes catalysed by Lewis acidElectronic supplementary information (ESI) available: Experimental details. See http://www.rsc.org/suppdata/cc/b3/b305003c/