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A New 3-Methylidenepentane-1,5-dianion Synthon: Synthesis of Perhydropyrano[2,3-b]pyrans and 1,7-Dioxaspiro[4.5]decanes.

โœ Scribed by Francisco Alonso; Jaisiel Melendez; Miguel Yus

Publisher
John Wiley and Sons
Year
2005
Weight
24 KB
Volume
36
Category
Article
ISSN
0931-7597

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โœ Jun Kato; Atsushi Seo; Kazuki Kiso; Kazuaki Kudo; Shinsaku Shiraishi ๐Ÿ“‚ Article ๐Ÿ“… 2010 ๐Ÿ› John Wiley and Sons โš– 31 KB ๐Ÿ‘ 1 views

Synthesis of 2,8-Dioxaspiro[4.5]decane-1,3,7,9-tetrone and the Reactions with Amines. -Title compound (VI) is prepared in connection with studies on the highly-sophisticated utilization of itaconic anhydride (I). Ratio of key intermediate (III) to the meta-isomer (IV) is about 4:1. Reaction of (VI)