Organic Reaction Mechanisms 1997

CF3

CF3

O

O

N

R

+

N

N

O

CHO

H

(87)

(88)

(89)

M

$ $ $

J

$ $

$

$ $

K

M

K

M

R2

R2

R2

R2

R1

R3

R1

R3

R

3

R

1

R

3

R1

O

O

O

O

N

N

N

N

H

H

H

H

(90a)

(90b)

(91a)

(91b)

SCHEME 6

$ $

									R2	OH
S						S				R1
					+		O–
O
								R3		O O
	(92a)						(92b)			(93)

$

O

CH3

S

CH3

+

N

H3C

N+

O

CH3

CH3 O

(94)

(95)

(96)

$

J

# #

J M

! " ! " $

J

M

$ $ $ $

$ $

#

M

J M

M

#" !$ " !$ "

#

J

J

J

K

J

J

M

J

K

$ $

$ $

M

J

OMe

OMe

O

S

S

Me

O

OR

N

N

O

H O

X

O

(97)

(98)

(99)

M M

M M

O
			R					OH	O
			O
							RCHO
											R
						OH
(100)			(101)					H	(102)

SCHEME 7

M

M J

K

# #

$

$

#

# J

R OH

O +

H (103)

$

#M M#

J

" &

#

M

M

	Ph				Ph
		Z		N
						O
		N			O
Ph	S						O
		PhH2C
	(104)			(105)		(106)

$

$

# #

$

J

K

#

#

#

J

$

OH

HO

HO

O

O

O

CHS

CHSH

Me

N

N

O N NH

Me

Me

O N NH2

(107)

(108a)

(108b)

# #

K

` ^

M

^

1

^

^- ^

^- ^

J

^

^-

^

^

^-