Question

4.) Cyclic ethers can be named in the IUPAC system using specific IUPAC names for each ring size (oxirane, oxetane, oxolane and oxane for the first 4 cyclic ethers) or they can be named using the epoxy designation to the root name. An additional IUPAC method uses oxa to designate that a carbon in a cycloalkane has been replaced with oxygen. Using the oxacycloalkane naming method, select the correct IUPAC name for the following molecule:

3.) An acceptable IUPAC name for the following molecule is:

2. An acceptable IUPAC name for the following molecule is: _A. (R)-1-benzyl-3-methylpentyl ethyl ether B. (S)-1-benzyl-3-methylpentyl ethyl ether _C. (R)-ethyl 3-methyl-1-phenyl-2-hexyl ether _D. (S)-ethyl 3-methyl-1-phenyl-2-hexyl ether E. (R)-5-ethoxy-3-methyl-6-phenylhexane F. (S)-5-ethoxy-3-methyl-6-phenylhexane __G. (R)-1-benzyl-1-ethoxy-3-methylpentane Y H. (S)-1-benzyl-1-ethoxy-3-methylpentane Cafe 4. Cyclic ethers can be named in the IUPAC system using specific IUPAC names for each ring size (oxirane, oxetane, oxolane and oxane for the first 4 cyclic ethers) or they can be named using the epoxy designation to the root name. An additional IUPAC method uses oxa to designate that a carbon in a cycloalkane has been replaced with oxygen. Using the oxacycloalkane naming method, select the correct IUPAC name for the following molecule: _A. 7-oxabicyclo[4.1.1 Joctane _B. 1-oxabicyclo[4.1.1 Joctane C. 7-oxabicyclo{4.1.1}heptane D. 1-oxabicyclo[4.1.1]heptane E. 2-oxabicyclo[4.1.1]cyclooctane ___F. 8-oxabicyclo[4.1.1]cyclooctane G. 8-oxabicyclo(4.1.1 Joctane _H. 2-oxabicyclo(4.1.1 Joctane

Answer 1

Answer 27. iion + Excess Ethyl Formate leg. Na ethanol diethyl succinate Na + EtOH Naolt teq Mechanism No Oet H ost Answer i n (S). 2-ethoxy-4-methylhexyl benzene. H- (S) 1-benzyl- 1. ethoxy-3-methyl Pentane 7-oxa bicyclo (4.1.1. Joctane