.beta.-(keto or sulfonyl)esters from reaction of silylketene ace

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...

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525353, 5253593, 5253594, 525377, 525386, 526194, 560150, 560174, 560178, C08F 810, C08F 836

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active

049836790

ABSTRACT:
Silylketene acetals, including "living" GTP polymers, are acylated or sulfonylated in the presence of GTP-effective catalysts with acyl or sulfonyl compounds to produce .beta.-ketoesters or .beta.-sulfonylesters; polymeric products, including capped, coupled and chain-extended polymers and block copolymers can be prepared.

REFERENCES:
patent: 3730930 (1973-05-01), Labanna
patent: 3817946 (1974-06-01), Ree
patent: 4027066 (1977-05-01), Victorius
patent: 4346144 (1982-08-01), Craven
patent: 4388448 (1983-06-01), Melby
patent: 4414372 (1983-11-01), Farnham et al.
patent: 4417034 (1983-11-01), Webster
patent: 4482729 (1984-11-01), Ishikawa et al.
patent: 4508880 (1985-04-01), Webster
patent: 4524196 (1985-06-01), Farnham et al.
patent: 4581428 (1986-04-01), Farnham et al.
patent: 4588795 (1986-05-01), Dicker et al.
patent: 4598161 (1986-07-01), Farnham et al.
patent: 4605716 (1986-08-01), Hertler
patent: 4622372 (1986-11-01), Dicker et al.
patent: 4656233 (1987-04-01), Hertler et al.
patent: 4681918 (1987-07-01), Webster
patent: 4711942 (1987-12-01), Webster
patent: 4822859 (1989-04-01), Sogah
Calvin, Silicon in Organic Synthesis, Butterworth and Co., Boston, MA, 1981, pp. 232-235.
Wissner, "2-Hetero Substituted Silylated Ketene Acetals . . . ," Journal of Organic Chemistry, vol. 44, No. 25, 1979, pp. 4617-4622.
Tirpak et al., "Acylation of Ketone Silyl Enol Ethers . . . ," Journal of Organic Chemistry, vol. 47, No. 2, 1982, pp. 5099-5102.
Rathke et al., "Condensation of O-Silyl Ketene Acetals . . . ," Tetrahedron Letters, No. 15, 1973, pp. 1297-1300.
Olofson et al., "A Regiospecific and Stereospecific Route . . . ," Tetahedron Letters, vol. 21, 1980, pp. 819-822.
Rousseau et al., "Reaction of Silylketene Acetals . . . ," Tetrahedron Letters, vol. 26, No. 35, 1985, pp. 4191-4194.
Webster et al., "Group Transfer Polymerization . . . ", J. Am. Chem. Soc. 105, 5706 (1983).
Noyori et al., "Trimethylsilyl Triflate in Organic Synthesis", Tet., 37, 3899 (1981).
Kramarova et al., J. Gen. Chem. USSR, 43, 1843 (1973).
Kramarova et al., J. Gen. Chem. USSR, 45, 469 (1975).
Burlachenko et al., J. Gen. Chem., USSR, 43, 1708 (1973).
Rousseau et al., Tetrahedron Lett., 26 (35), 4191 (1985).

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