SYNTHESIS OF 1,2,5-TRIMETHYL-4-ETHOXYCARBONYLMETHYL-4-HYDROXYPIPERIDINE AND ITS HOMOLOGS Article Prostakov N.S., Plesnakov V.G. Chemistry of Heterocyclic Compounds. Латвийский институт органического синтеза Латвийской академии наук / Springer New York Consultants Bureau. Vol. 4. 1971. P. 763-764