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2004
Deprotection
O 0345
Solvent-Modulated Pd/C-Catalyzed Deprotection of Silyl Ethers and ChemoselecHydrogenation. — The selective cleavage of Tes and Tbs ethers in the presence
47- 052 tive
of acid-sensitive functional groups under mild and neutral hydrogenation conditions
using Pd-C as catalyst and methanol as solvent is reported. In contrast, chemoselective
hydrogenation of reducible functional groups such as C≡C, C=C and benzyl ether, proceeds in the presence of Tbs or Tes ethers in EtOAc or acetonitrile. — (IKAWA, T.;
HATTORI, K.; SAJIKI*, H.; HIROTA, K.; Tetrahedron 60 (2004) 32, 6901-6911;
Lab. Med. Chem., Gifu Pharm. Univ., Mitahora, Gifu 502, Japan; Eng.) — Klein
2004
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