摘要:
Compounds of formula (I) are disclosed. The tetrapyrole ring in formula (I) can be substituted with a metal cation (M); R1, R2, R3 and R4 separately represent a hydrogen atom, a C1-4 alkyl or alkyloxy radical, or a phenyl radical optionally substituted by vinyl, hydroxy, nitro, amino, bromo, chloro, fluoro, iodo, benzyloxy, or hydroxymethyl radicals; R5, R6, R7 and R8 separately represent a hydrogen atom or a C1-4 alkyl radical; Ra, Rb and Rc separately represent a hydrogen atom, a C1-4 alkyl or alkyloxy radical optionally substituted by a halogen, or a phenyl radical optionally substituted by vinyl, hydroxy, nitro, amino, bromo, chloro, fluoro, iodo, benzyloxy, or hydroxymethyl radicals, wherein at least one of Ra, Rb, and Rc is a phenyl radical. Compounds of formula (I) bound to a silica, a sol-gel material or a mesoporous silica are useful for selective trapping of carbon monoxide.
摘要:
Compound of formula (I): in which W1, W2 and W3, which are identical or different, each represent, independently of one another, a divalent radical chosen from those represented by the general formula (A): —[(CT5T6)a—(CT1T2)n—[N(R4)]p—(CT3T4)m—(CT7T8)b]1— (A) as defined in the description and in which R4 represents a hydrogen atom, an alkyl radical, a [(hetero)aryl]alkyl radical or a radical represented by the general formula (B), R5—Si(X1) (X2) (X3), as defined in the description, and R1, R2 and R3, which are identical or different, each represent, independently of one another and of R4, a hydrogen atom, an alkyl radical, a [(hetero)aryl]alkyl radical comprising from 7 to 12 carbon atoms or a radical represented by the general formula (B), it being understood that the compound of formula (I) comprises more than six cyclic nitrogen atoms.