Process for the synthesis of allylated derivatives of 2,2,6,6-te

Details Process for the synthesis of allylated derivatives of 2,2,6,6-te Process for the synthesis of allylated derivatives of 2,2,6,6-te

1990-02-16

1993-12-14

Richter, Johann

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D21136

Patent

active

052704700

ABSTRACT:
A process is disclosed for the synthesis of 4-allyloxy-2,2,6,6-tetraalkylpiperidinic derivatives by starting from the corresponding 2,2,6,6-tetraaLkyLpiperidinols and from an allyl halide, characterized in that the reaction is made to take place in the absence of water, and in the presence of a finely subdivided allyl-metal hydroxide and of small amounts of a phase-transfer catalyst. The products, which are thus obtained with yields higher than 90%, are useful a stabilizers for polymers or as intermediates for such products.

REFERENCES:
patent: 4684726 (1987-08-01), Greco et al.
Tetrahedron Letters, vol. 27, No. 35, pp. 4171-4174 (1986).
March, J., Adv. Org. Chem., 2nd Ed., pp. 357-358 (1977).

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