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A novel synthesis of maltol and related γ-pyrones

✍ Scribed by T.M. Brennan; P.D. Weeks; D.P. Brannegan; D.E. Kuhla; M.L. Elliott; H.A. Watson; B. Wlodecki

Publisher
Elsevier Science
Year
1978
Tongue
French
Weight
160 KB
Volume
19
Category
Article
ISSN
0040-4039

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✦ Synopsis

Malt01 (6, R=CH3; 2-methyl-3-hydroxy-4fl-pyran-4-one) is a naturally occurring substance found in trace amounts in many plant systems'. Malt01 (Veltol@) and its homolog ethyl malt01 (6, R=CH2CH3; 2-ethyl-3-hydroxy-4tj-pyran-4-one; Veltol Plus@)

No. 4

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While photorearrangements of cross-conjugated cyclic dienones are well knownl, the photochemistry of If-pyrone is limited in its utility since a complex rearrangement was encountered in addition to dime-.zation. 2 This complexity depends upon the nature of an intermediate zwitterion, whose intermole