??????????? Stereochemistry - PowerPoint PPT Presentation

1 / 8
About This Presentation
Title:

??????????? Stereochemistry

Description:

Stereochemistry Geometrical isomer ... – PowerPoint PPT presentation

Number of Views:49
Avg rating:3.0/5.0
Slides: 9
Provided by: chemsciK5
Category:

less

Transcript and Presenter's Notes

Title: ??????????? Stereochemistry


1
??????????? Stereochemistry
???????????? Geometrical isomer ????????? CC
???????????????????? 4 ???????????????????????? ?
??????????????????? cis ???? trans ??????
????????????? E ???? Z ??????????????????? E ????
Z ???????????????????Sequence rules ?????????????
????????????????????? priority
2
Sequence rules
???????????????? ?????????????? priority ???????
???? 35Br gt 17Cl gt 8O gt 7N gt 6C gt 1H
(?????????????????????????????????)
?????? 1 ????????? ?????????????????????????????
????????????????? multiple bond ????
???????????????????? ?????????????????????????????
???????????????? ????
3
E-3-chloro-2-pentene
???????????????????????????????????? E-isomer
?????????????????????????????? ????????????
priority ???? Hi ???? L ????????????????????????
Z ???????????? priority ???? Hi ???? L
??????????????????????? E
4
Z
???..???? Z-isomer
Z
???????????????? ??????? Z-isomer
5
2
1
3
4
-(-)-Lactic acid
????????????????? R
??????????????????????????? priority ??? Sequence
rules ???? 1, 2, 3 ??? 4
?????????? 4 ??????????????????????? 1, 2 ???
3 ???????????????????????? R ?????????????????????
??? S
????????? 2 ???????????????????
6
1
2
4
3
??????????????????????? ??????? S ??? ???????? 4
??????????????????? (??????????????) ?????????????
?????????????????? R
7
2
4
3
1
8
???? ???????? 3 ?????????????????????????
Fischer projection ????????? ?????????????????????
?????????????? Fischer projection
????????? ?????????????????? 4 ?????????????????
(????????) ????????? ??????????? 4 ????????????
(??????????????) ??????????
????????? ???????????????? ??????????????????????
???????????? ?????????? ??????????????????????????
?????? ???????????????????????????????????????????
????????
Write a Comment
User Comments (0)
About PowerShow.com