Higher atomic mass species gets priority such as 1st is given to CN because in CN Carbon in directly attached to the nitrogen by three bonds.every bond count as a particular nitrogen atom.in case of methyl(CH3) the carbon is attach to 3 hydrogen atom which has lower atomic mass than nitrogen and in case of ethyl(CH3CH2) the first carbon is attach to two hydrogen and one carbon both have less atomic mass than nitrogen.In all three species the Carbon is same so we go to more substitution.
2nd is assigned to ethyl group because one carbon is attach to it which has higher atomic number than hydrogen of methyl group.
3rd is assigned to methyl group because carbon in methyl group has higher atomic number than hydrogen which is directly attach.
4th is given to hydrogen because it has lowest atomic number among all substitute.
So it forms anticlockwise circle hence it is S configuration
Remember for clockwise circle R configuration is assign and for anticlockwise S configuration is assign
why is this S?? isnt the H the first and Ch3 the second so goes clockwise...
why is the first one S but the second one R? Indicate the stereochemical configuration for the tetrahedral centers shown below. - O OR O not a stereocenter Site 1 Site 1 not a stereocenter Site 2 000 Correct not a stereocenter
Why do C-H bonds decrease in strength in R-H when R goes from primary to secondary to tertiary, as stability increases? I thought the more stable the bond is, is the stronger the bond.
Consider the following reaction: OH Н4С H,SO CH3 + ОН A Show the complete mechanism for the following transformations. Make sure to show all arrows depicting the movement of electrons.
the answer is I'm confused why in part b the C-CH3 bond is broken instead of just the C-H. I thought the OH radical only wanted a hydrogen. Exercise 3-3 (a) Which C-C bond would break first, the bond in ethane or that in 2,2-dimethy pro (b) The hydroxyl radical, HO, is highly toxic by abstraction of hydrogen a biological molecules, fuelled by the strength of the O-H bond in H2O (Table 3-1); preferred product of attack of HO on...
s h) for all z c l e Sub-problem 3. Recall monotonicity of integration: If h() S [-1, 1], then This just says that integruls preserve inequalities 1. Explain why this is true graphically 2·Let g be continuous on [0,1]. Use the previous item, and the fact that to show that 3. Use the first two items to show that if g is bounded, say Ig(r)l s M for z [0, 1], then first two derivatives are continos on is...
Question 3 Draw the mechanism for the following transformations: Нас снз CH3 H-SO Hс Он Question 4: 1) Hg(OAc) H,o 2) NaBH Нас- CHy Н,с сн, Question 5: Predict the product(s) of the following reaction: 1) BH, THF 2) H2O2, NaOH CH2 H,с Question 6: Predict the products of each of the following reactions: CH3 Hас- На Ni - CH3
Designate “R” & “S” CHSCH/ CH3 CH Сн, н H H. HH HH Imirror para within moldinu CHA | CHI mirror piane between H₃C CH₂ H₃C CH₂ H₃C CH₂ CÃ, CH₂
f) Why is diamond so hard? g) Why is graphite used as a lubricant? h) Why is the melting point of ice (0C, I atm pressure) so high compared to solid H,S (-82 C, 1 atm pressure)? i) Why is it necessary to state the pressure in 0 above?
Simplify the left hand side so that L H S = R H S : ( tan ( a )) + ((1)/ (cos ( a )))^ 2= (1+sin(a)) / (1−sin(a)) = = = = =(1+sin(a))/(1−sin(a))
designate the R/S configuration for any chiral centers нсн, но, сня H.CH, H, CH3 Но, | | H NH20 Кн 23, HC NHA 24. нсн, нсна H CH3 нон Дн 26 но сн, .. .CH OH нд но со Р o . 28 ноги нас < HO 29. Но LOH не 30.