to a method of synthesizing 4-substituted phthalaldehyde
AB - End-capped poly(phthalaldehyde) [PPA] is a well-studied metastable polymer that has attracted interest due to its ease of synthesis and rapid depolymerization. PPA is limited, however, in the type of macromolecular architectures accessible, as functionalizable phthalaldehyde derivatives are not commercially available and their synthesis is cumbersome. To this end, a general route to phthalaldehyde-benzaldehyde copolymers was sought, as benzaldehyde comonomers with various pendant functionalities are readily available. It was found that copolymers are synthesized by an anionic initiated polymerization of phthalaldehyde and electron-deficient benzaldehydes. The comonomer reactivities are shown to be sensitive to the benzaldehyde electronics; the relative reactivity of phthalaldehyde-benzaldehyde comonomer pairs strongly correlate with the Hammett values of the benzaldehyde monomer. These copolymers are then further modified to yield cross-linked, degradable polymer networks in just a two-step sequence. Phthalaldehyde-benzaldehyde copolymers thus enable functionalization of metastable polymers that rapidly depolymerize upon exposure to acid, thereby facilitating the development of triggerable degradation of polymer networks.
Phthalaldehyde : definition of Phthalaldehyde and …
Study On Synthesis, Of O-phthalaldehyde Disinfectant
Exposure hazards and the potential carcinogenic effects of formaldehyde have limited its healthcare uses recently, while next-generation aldehydes such as glutaraldehyde and o-phthalaldehyde, with better sporicidal activity, faster onset of action and lesser exposure effects, have replaced formaldehyde in the disinfection manuals of most healthcare establishments.
OPA | Ortho-Phthalaldehyde | Showa America | Buy OPA
P-Phthalaldehyds is an intermediate for organic synthesis of pesticides, perfumes, dyes, medicines, plastics, etc., and mainly used in Fluorescent Whitening Agent ER and synthetic plastics.