Chemistry is traditionally divided into organic and inorganic chemistry. Product Details of 21797-13-7, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 21797-13-7
A palladium(II)-catalyzed synthesis of spiroacetals through a one-pot multicomponent cascade reaction
(Chemical Equation Presented) Functionalized spiroacetals have been easily prepared in a one-pot three-component involves the reaction of pentynol derivatives, salicylaldehydes, and amines in the presence of a palladium(II) complex (see scheme). Alternatively, oxygen-substituted spiroacetals orthoesters as the third component.
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Reference：
Chapter 1 An introduction to palladium catalysis,
Palladium/carbon catalyst regeneration and mechanical application method