Kinetics; under N2 at 140-180°C for 8 h; detected by IR;

in further solvent(s) addn. of Sn compd. to n-butanol, reflux, acid or base catalysis;

in further solvent(s) addn. of C6H8O4Sn to n-butanol, suspn. mixed thoroughly, dropwise addn.of concd. HCl until C6H8O4Sn was consumed, water and alcohol removed byheating; purifn. by vac. distn.; elem. anal., mass spectroscopy;

in diethyl ether reaction of tin, CH3CH2CH2OCOCH=CH2 and dry HCl in ethyl ether, productmixt extd. by warm CHCl3; purifn. of monoester by fractional recrystn.;

sodium hydrogencarbonate in further solvent(s) byproducts: NaCl; addn. of n-butanol to mixt. of Sn compd. and HSCH2COOC8H17-i, 50-60°C, slow addn. of NaHCO3, 2-3h, NaCl removed by washing with water; mass spectroscopy;