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- https://chem.libretexts.org/Workbench/LCDS_Organic_Chemistry_OER_Textbook_-_Todd_Trout/14%3A_Conjugated_Compounds_and_Ultraviolet_Spectroscopy/14.01%3A_Why_This_Chapterβ-Carotene, for instance, the orange pigment responsible for the color of carrots and an important source of vitamin A, is a conjugated polyene with 11 double bonds. Most of the unsaturated compounds ...β-Carotene, for instance, the orange pigment responsible for the color of carrots and an important source of vitamin A, is a conjugated polyene with 11 double bonds. Most of the unsaturated compounds we looked at in the chapters on Alkenes: Structure and Reactivity and Alkenes: Reactions and Synthesis had only one double bond, but many compounds have numerous sites of unsaturation.
- https://chem.libretexts.org/Bookshelves/Organic_Chemistry/Organic_Chemistry_(OpenStax)/14%3A_Conjugated_Compounds_and_Ultraviolet_Spectroscopy/14.00%3A_Why_This_Chapterβ-Carotene, for instance, the orange pigment responsible for the color of carrots and an important source of vitamin A, is a conjugated polyene with 11 double bonds. In this chapter, we’ll look at som...β-Carotene, for instance, the orange pigment responsible for the color of carrots and an important source of vitamin A, is a conjugated polyene with 11 double bonds. In this chapter, we’ll look at some of the distinctive properties of conjugated molecules and at the reasons for those properties.
- https://chem.libretexts.org/Bookshelves/Organic_Chemistry/Organic_Chemistry_II_(Morsch_et_al.)/14%3A_Conjugated_Compounds_and_Ultraviolet_Spectroscopy/14.00%3A_IntroductionJust as the term dieneindicates the presence of two carbon-carbon double bonds in a compound, so the term polyene is used to describe compounds containing many carbon-carbon double bonds. Then give th...Just as the term dieneindicates the presence of two carbon-carbon double bonds in a compound, so the term polyene is used to describe compounds containing many carbon-carbon double bonds. Then give the lowest possible number for the location of the carbons with double bonds and any other functional groups present (remember when naming alkenes that some groups take priority such as alcohols).
- https://chem.libretexts.org/Bookshelves/Organic_Chemistry/Supplemental_Modules_(Organic_Chemistry)/Conjugation/Conjugated_DienesA diene is a hydrocarbon chain that has two double bonds that may or may not be adjacent to each other. This section focuses on the delocalization of pi systems by comparing two neighboring double bon...A diene is a hydrocarbon chain that has two double bonds that may or may not be adjacent to each other. This section focuses on the delocalization of pi systems by comparing two neighboring double bonds. The arrangements of these double bonds can have varying affects on the compounds reactivity and stability.
- https://chem.libretexts.org/Bookshelves/Organic_Chemistry/Organic_Chemistry_(Morsch_et_al.)/14%3A_Conjugated_Compounds_and_Ultraviolet_Spectroscopy/14.00%3A_IntroductionJust as the term dieneindicates the presence of two carbon-carbon double bonds in a compound, so the term polyene is used to describe compounds containing many carbon-carbon double bonds. Then give th...Just as the term dieneindicates the presence of two carbon-carbon double bonds in a compound, so the term polyene is used to describe compounds containing many carbon-carbon double bonds. Then give the lowest possible number for the location of the carbons with double bonds and any other functional groups present (remember when naming alkenes that some groups take priority such as alcohols).
- https://chem.libretexts.org/Courses/can/CHEM_232_-_Organic_Chemistry_II_(Puenzo)/01%3A_Conjugated_Compounds_and_Ultraviolet_Spectroscopy/1.01%3A_IntroductionThe resonance hybrid of a 1,3-butadiene shows this bond to contain a significant double bond character, with its bond length being roughly the average of a single and double bond. Thus, the “extra” st...The resonance hybrid of a 1,3-butadiene shows this bond to contain a significant double bond character, with its bond length being roughly the average of a single and double bond. Thus, the “extra” stability of a conjugated diene results in part from the greater amount of s character in the orbitals forming the C–C single bond.
- https://chem.libretexts.org/Bookshelves/Organic_Chemistry/Organic_Synthesis_(Shea)/01%3A_Pericyclic_Reactions/1.01%3A_Introduction_to_Pericyclic_ReactionsThis page provides an overview of the three types of pericyclic reactions: cycloadditions, electrocyclic reactions, and sigmatropic rearrangements.
- https://chem.libretexts.org/Courses/Smith_College/Organic_Chemistry_(LibreTexts)/14%3A_Conjugated_Compounds_and_Ultraviolet_Spectroscopy/14.01%3A_IntroductionJust as the term dieneindicates the presence of two carbon-carbon double bonds in a compound, so the term polyene is used to describe compounds containing many carbon-carbon double bonds. Then give th...Just as the term dieneindicates the presence of two carbon-carbon double bonds in a compound, so the term polyene is used to describe compounds containing many carbon-carbon double bonds. Then give the lowest possible number for the location of the carbons with double bonds and any other functional groups present (remember when naming alkenes that some groups take priority such as alcohols).
- https://chem.libretexts.org/Courses/Smith_College/CHM_223_Chemistry_III%3A_Organic_Chemistry_(2024)/08%3A_Conjugated_Compounds_and_Ultraviolet_Spectroscopy/8.01%3A_IntroductionThus the double bonds in butadiene, CH 2 =CH-CH=CH 2 , are conjugated, and this compound is an example of a conjugated diene. Just as the term diene indicates the presence of two carbon-carbon double ...Thus the double bonds in butadiene, CH 2 =CH-CH=CH 2 , are conjugated, and this compound is an example of a conjugated diene. Just as the term diene indicates the presence of two carbon-carbon double bonds in a compound, so the term polyene is used to describe compounds containing many carbon-carbon double bonds.
- https://chem.libretexts.org/Bookshelves/Organic_Chemistry/Organic_Synthesis_(Shea)/01%3A_Pericyclic_Reactions/1.02%3A_Cycloaddition_ReactionsThis page covers common cycloaddition reactions, including the Diels-Alder reaction, ene reaction, photo [2+2], ketene [2+2], and 1,3-dipolar cycloadditions, and discusses why some are promoted by hea...This page covers common cycloaddition reactions, including the Diels-Alder reaction, ene reaction, photo [2+2], ketene [2+2], and 1,3-dipolar cycloadditions, and discusses why some are promoted by heat and others by light.
