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Keys to the Problems (05/16/2020)
Yokoshima Group – Group Meeting Problems
Keys to the Problems (2020/05/16)
Yokoshima Group – Group Meeting Problems
2
O
OMeO
Me
Ph BCl3
O
OMeO
Me
Ph BCl2
OMeO
MePh
O
BCl2
Cl
OMeO
MePh
OBCl2
OMe
Ph
O
O
MeClCl
BCl2
OMe
Ph
OBCl2
quench
OMe
Ph
OH
Cl
CH3COCl
OMeO
MePh
O BCl2
Cl
Keys to the Problems (05/16/2020)
Yokoshima Group – Group Meeting Problems
3
Keys to the Problems (05/23/2020)
Yokoshima Group – Group Meeting Problems
Keys to the Problems (05/23/2020)
Yokoshima Group – Group Meeting Problems
Keys to the Problems (05/23/2020)
Yokoshima Group – Group Meeting Problems
Keys to the Problems (05/23/2020)
Yokoshima Group – Group Meeting Problems
Q3
Keys to the Problems (05/30/2020)
Yokoshima Group – Group Meeting Problems
CF3 O
O
CF3
O
O
OOH
Me
Me
OMe
TMSO
H
OTBSMe
TMSO
N
N
CF3 O
OCF3 N
O
NMe
Me
CF3 N
O
NMe
Me O
OO
Me
Me
OMe
TMSO
H
OTBSMe
TMSO
CF3
O
O
OO
Me
Me
OMe
TMSO
H
OTBSMe
TMSO
CF3
O
Zn O
OO
Me
Me
OMe
TMSO
H
OTBSMe
TMSO
CF3
O
Zn
OO
Me
Me
OMe
TMSO
H
OTBSMe
TMSO
CF3
O
ZnO
O
O
Me
TMSO
H
OTBSMe
TMSO O
O OHCF3
MeMe
Zn
OAc
H
OAc
O
O
Me
TMSO
H
OTBSMe
TMSO O
OH OHCF3
MeMe
+ H
aqueouswork up
tetracycliccompound
Keys to the Problems (05/30/2020)
Yokoshima Group – Group Meeting Problems
Keys to the Problems (05/30/2020)
Yokoshima Group – Group Meeting Problems
2. ⑦
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Keys to the Problems (05/30/2020)
Yokoshima Group – Group Meeting Problems
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