Predict the stereochemistry For the E2 reaction Draw a Newmann Projection Of the reactive con Formation and the Structure For only major product of the reaction. Br
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- 3) Explain how and why the reaction below results in the observed regiochemistryand/or stereochemistry.Plastic photochromic sunglasses are based on the following reversible rearrangement of a dye inside the lenses that occurs when the lenses are exposed to sunlight. The original dye absorbs UV light but not visible light and is thus colorless, while the rearrangement product absorbs visible light and is thus darkened. (a) Show the mechanism of the rearrangement. (b) Why does the rearrangement product absorb at a longer wavelength (visible light) than the original dye (UV)?camparing vanious alkyl halides reactivity toward SN1 reactions using water as a nucleopnile Entry # Alko| halide K(x101min") 0.2231 t 0.0041 Eq(kcsI) COHS CH 2 C1 Cetts CH2Br coHs CHCI 2 Ce Hs CHCIBr Cuts CCI3 CoHs CC12 Br A 212214) 21.2 2. 5684I 0.085 19.1 2.214 E 0.037 23.3 31.08 1 0.19 110.5 0.9 4 21.9 20.5 19.2 reaction was dame in 50%. aqueOUS acetune at 30°C reaction n scherre fur entry #1 H2O -> acetane
- Draw the equilibrium chair confirmation of cis1-chloro-3-methylcyclohexane. Interpret the E2 elimination, and draw the structure of the product!Zaitsev's Rule refers to: which alkene is favored in a product mixture O how resonance contributors stabilize cations/anions/radicals O the stereochemistry of reaction intermediates/transition states O the stability of carbocation intermediatesQ, - write a Mechanism that explains hint he stereochemisty (sed pmacal rearangemendy a) CotH6 fonn Hcl b) HeoH O wr,te he Mechanism fer OH CHBrg NAOH (Carbene)
- Predict the product of this E2 elimination reaction. ||| Br NaOCH3 || = IVWhat alkene yields C and D under the same conditions?1. Draw the intermediates A-C for reactions a and b. Please show the appropriate stereochemistry where necessary. RO hv .. RQ CO₂Me MO,C. Anti-tumour agent Coriolin co₂Me barrelene
- In the E2 reaction of 2-bromopentane with sodium tert-butoxide, 1-pentene is favored over 2- pentene. It is based on O the size of base used. O the Zaisev's rule. O the strength of the base used. O the Hoffman product. O the stability of alkenewhy does this carbocation go through rearrangemnt by a hydride shift?What is the product of the hydride shift rearrangement reaction shown in the box? A) НО. B) H2SO4 ? H,O ОН HO D) OD OC O A ов