The effect of cyclization of compounds 5 and 6 into compound 37-42 and 46, possessing different aryl groups
at 6-position of the [1,2,4]triazolo[3,4-b][1,3,4]thiadiazole ring system have also been studied.
ArH'] refer to the proton numbers of allyl groups and aryl groups
in HBP-AL, respectively.
0 Hz indicate an axial-axial (trans) relationship, and the aryl groups
on C-2 and C-4 are both pseudo pseudo-equatorial and are in the cis-configuration (Figure 2).
Synthesis and properties of photochromic diarylethenes with heterocyclic aryl groups
Alkyl and aryl groups
, fluoro-substituted organic groups, and wholly inorganic components can be utilized.
Each R2 is selected from alkyl and aryl groups
having up to six carbon atoms.
5) A combination of trimethoxy silanes with propyl and phenyl groups can be chosen to give the same proportions of alkyl and aryl groups
that are present in the pre-formed silicone intermediate shown in Fig.
Therefore the procedure can be used to prepare just trisubstituted hydrazines with two identical and one different aryl groups
2 shows that pasture and potato generally lead to a large decline in the O-alkyl and alkyl C groups with the aryl groups
remaining relatively constant.
This first article deals with the covalent modification of carbon surfaces by grafting of aryl groups
from the electrochemical reduction of diazonium salts.