Pyrethrins are a group of naturally occurring insecticidal substances found in the flowers of various plants of the chrysanthemum family. The following is the structure of a typical pyrethrin, cinerin I (exclusive of stereochemistry):
(a) Locate any isoprene units present in cinerin I.
(b) Hydrolysis of cinerin I gives an optically active
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- What is the major organic product of the following reaction? (a) (b) NaBH4 CH3CH₂OH ? (c) (d) OHarrow_forward(a) A hydrocarbon isolated from fish oil and from plankton was identified as 2,6,10,14-tetramethyl-2-pentadecene. Write its structure.(b) Alkyl isothiocyanates are compounds of the type RN C S. Write a structural formula for allyl isothiocyanate, a pungent-smelling compound isolated from mustard.(c) Grandisol is one component of the sex attractant of the boll weevil. Write a structural formula for grandisol given that R in the structure shown is an isopropenyl group.arrow_forward(i) State reagents G and J. (ii) Draw the structural formula for compounds D, E and H.arrow_forward
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- The odor of ripe bananas and many other fruits is due to the presence of esters. For example: Banana oil (isopentyl acetate) (a) Write the name (common or IUPAC) of the ester responsible for the fragrance of the following: pineapple, orange, apple, peach, & lavender (b) Choose one fragrant from (a) and name the alcohol and the carboxylic acid needed to synthesize this ester. (c) Show the detailed mechanism of the Fischer Esterification reaction that will be involved in the synthesis of the fragrant you have chosen in part (a).arrow_forwardCompounds B and C are hydrocarbons with the structural formulae as shown below. CH, „CH, в (a) Name compounds B and C according to the IUPAC nomenclature. (b) Both B and C can undergo oxidation reaction with the same oxidizing agent. Write chemical equations involved and explain the differences between these two reactions. (c) Name one reaction that converts B to methylcyclohexane.arrow_forwardDraw the structures of the following compounds:(a) tert-butylaminearrow_forward
- Introduction to General, Organic and BiochemistryChemistryISBN:9781285869759Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar TorresPublisher:Cengage Learning