Premium
N 21 ,N 22 ‐carbonyl‐bridged biliverdin. red‐blue color change effected by conformation
Author(s) -
Boiadjiev Stefan E.,
Lightner David A.
Publication year - 2005
Publication title -
journal of heterocyclic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.321
H-Index - 59
eISSN - 1943-5193
pISSN - 0022-152X
DOI - 10.1002/jhet.5570420126
Subject(s) - chemistry , chloroform , trifluoroacetic acid , magenta , biliverdin , yield (engineering) , medicinal chemistry , photochemistry , organic chemistry , heme , materials science , heme oxygenase , inkwell , composite material , metallurgy , enzyme
An N 21 ,N 22 ‐carbonyl‐bridged mesobiliverdin, prepared in high yield by reaction of the unbridged parent (λ max 639 nm, ϵ 15,700, chloroform) with 1,1′‐carbonyldiimidazole and 1,8‐diazabicyclo[5.4.0]undec‐7‐ene, gave magenta‐colored solutions in chloroform that absorb strongly in the visible spectrum (λ max 534 nm, ϵ 27,700) and shifted to bright blue (λ max 669 nm, ϵ 35,300) upon addition of trifluoroacetic acid.
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom