Rapid sulfonyloxylactonization of alkenoic acids under microwave and ultrasound irradiation
Fast and convenient reactions were investigated under microwave and ultrasound irradiation, providing simple methods for sulfonyloxylactonization of alkenoic acids in good yields in a short time. Copyright Taylor & Francis Group, LLC.
Gao, Liumian,Li, Li,Zhu, Min
experimental part
p. 953 - 957
(2011/12/15)
An efficient catalytic sulfonyloxylactonization of alkenoic acids using hypervalent iodine(III) reagent
A novel and efficient catalytic method for sulfonyloxylactonization of alkenoic acids is reported. (Diacetoxyiodo)benzene could be used as a recyclable catalyst in combination with m-chloroperbenzoic acid as an oxidant in the presence of sulfonic acid to
Yan, Jie,Wang, Hong,Yang, Zhenping,He, Yan
experimental part
p. 2669 - 2672
(2010/01/07)
TOSYLOXYLACTONIZATION OF ALKENOIC ACIDS WITH BENZENE
benzene(1) reacts with 3-butenoic, 4-pentenoic, 5-hexenoic and 2-methyl-4-pentenoic acids in CH2Cl2 to give tosyloxyacetones and with trans-3-hexenoic and 2-cyclopenteneacetic acids to give unsaturated lactones. 5-Norbornene-endo-2-carboxylic acid with 1 gives a rearranged lactone while 5-norbornene-endo-2,3-dicarboxylic acid gives a bis-lactone.
Shah, Mayur,Taschner, Michael J.,Koser, Gerald F.,Rach, Nancy L.
p. 4557 - 4560
(2007/10/02)
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