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Addition of Silyl Ketene Acetals to Nitrones Catalyzed by Lanthanide Triflates

โœ Scribed by Changtao Qian; Longcheng Wang

Book ID
108370934
Publisher
Elsevier Science
Year
2000
Tongue
French
Weight
114 KB
Volume
56
Category
Article
ISSN
0040-4020

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The effect of hydrogen bonding between nitrones and urea derivatives in the nucleophilic addition reaction was examined. Thioureas bearing an electron-withdrawing group on an aromatic ring, behave like Lewis acid to promote the addition of TMSCN and ketene silyl acatals to various nitrones and aldeh